155 regulations for Montana, United States. Page 1 of 2.
Arctic Grayling — Big Hole River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 0 (catch-and-release only, entire river) for arctic grayling. All arctic grayling must be released. Big Hole River exception (entire river): catch-and-release for arctic grayling. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release only, entire river) · Size limit: All arctic grayling must be released. · License required
Black Crappie — Tongue River Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 5 daily and in possession (crappie) for black crappie. Tongue River Reservoir exception: crappie - 5 daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession (crappie) · License required
Brook Trout — Blackfoot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and in possession (standard); mainstem from Landers Fork mouth downstream to the confluence with the Clark Fork River: 0 (catch-and-release for brook trout) for brook trout. Blackfoot River exception (mainstem from Landers Fork mouth downstream to the confluence with the Clark Fork River): catch-and-release for brook trout. This regulation is a result of bull trout being misidentified and harvested as brook trout; brook trout are very rare in this section of river whereas bull trout are common. Elsewhere on the river, the standard Western District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30, unless otherwise specified in Exceptions to Standard Regulations · Daily limit: 20 daily and in possession (standard); mainstem from Landers Fork mouth downstream to the confluence with the Clark Fork River: 0 (catch-and-release for brook trout) · License required
Brook Trout — Georgetown Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 5 daily and in possession (combined trout), of which only 1 may be a brook trout for brook trout. Only brook trout over 16 inches can be kept. Georgetown Lake exception: combined trout, includes brook trout - 5 daily and in possession, of which only 1 may be a brook trout. Only brook trout over 16 inches can be kept. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through March 31, except the South and East shoreline area (all waters from shore or within 100 yards of shore from a point 200 yards west of Lakeside at Georgetown Marina, including all of Stuart Mill Bay, to a point 200 yards north of the mouth of North Fork Flint Creek) is only open July 1 through March 31; elsewhere on Georgetown Lake, open third Saturday in May through March 31 · Daily limit: 5 daily and in possession (combined trout), of which only 1 may be a brook trout · Size limit: Only brook trout over 16 inches can be kept. · License required
Brown Trout — Beaverhead River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Clark Canyon Dam to High Bridge FAS: 0 (catch-and-release); High Bridge to Barretts Diversion: 5 fish daily and in possession, all fish must be less than 18 inches; Barretts Diversion to the mouth: 0 (catch-and-release only) for brown trout. High Bridge to Barretts Diversion: all fish must be less than 18 inches. Beaverhead River exceptions: Clark Canyon Dam to High Bridge FAS - catch-and-release for brown trout, artificial lures and single-pointed hooks only. High Bridge to Barretts Diversion - brown trout 5 fish daily and in possession, all fish must be less than 18 inches. Barretts Diversion to the mouth - brown trout catch-and-release only. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Clark Canyon Dam to Pipe Organ Bridge: open third Saturday in May through Sept. 30. Barretts Diversion to the mouth: open April 1 through Sept. 30 · Daily limit: Clark Canyon Dam to High Bridge FAS: 0 (catch-and-release); High Bridge to Barretts Diversion: 5 fish daily and in possession, all fish must be less than 18 inches; Barretts Diversion to the mouth: 0 (catch-and-release only) · Size limit: High Bridge to Barretts Diversion: all fish must be less than 18 inches. · License required
Brown Trout — Big Hole River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Headwaters to Dickie Bridge: 5 daily and in possession (combined trout), no size restriction; Dickie Bridge to Brownes Bridge FAS and Brownes Bridge FAS to the mouth: 0 (catch-and-release only) for brown trout. Headwaters to Dickie Bridge: no size restriction. Big Hole River exceptions: see reach rules above; float-outfitting day closures apply by reach from the third Saturday in May through Labor Day. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Headwaters to Dickie Bridge: open all year. Dickie Bridge to Brownes Bridge FAS: open April 1 through Sept. 30 (artificial lures only). Brownes Bridge FAS to the mouth: open April 1 through Sept. 30 · Daily limit: Headwaters to Dickie Bridge: 5 daily and in possession (combined trout), no size restriction; Dickie Bridge to Brownes Bridge FAS and Brownes Bridge FAS to the mouth: 0 (catch-and-release only) · Size limit: Headwaters to Dickie Bridge: no size restriction. · License required
Brown Trout — Bighorn River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout for brown trout. Only 1 over 18 inches. Bighorn River exception (entire river): a State of Montana Fishing License is required for all anglers to fish on the Bighorn River within the boundaries of the Crow Reservation; a tribal permit is not required. Cable 600 feet below Afterbay Dam to Bighorn FAS: artificial lures only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout · Size limit: Only 1 over 18 inches. · License required
Brown Trout — Bitterroot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 14 inches for brown trout. Only 1 over 14 inches. Bitterroot River exception: during the Extended Season (Dec. 1 to the third Saturday in May) trout fishing is catch-and-release only, with artificial lures, maggots and/or aquatic insects only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30; catch-and-release for all trout Dec. 1 to third Saturday in May · Daily limit: 3 daily and in possession (combined trout), only 1 over 14 inches · Size limit: Only 1 over 14 inches. · License required
Brown Trout — Blackfoot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 rainbow trout over 14 inches long, any size brown trout for brown trout. Any size brown trout (within the 3-fish combined trout limit). Blackfoot River exception: combined trout - 3 daily and in possession, only 1 rainbow trout over 14 inches long, any size brown trout. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30 (mainstem and tributaries); mainstem only: catch-and-release for trout Dec. 1 to third Saturday in May, tributaries closed during the extended season · Daily limit: 3 daily and in possession (combined trout), only 1 rainbow trout over 14 inches long, any size brown trout · Size limit: Any size brown trout (within the 3-fish combined trout limit). · License required
Brown Trout — Canyon Ferry Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession any size) for brown trout. Canyon Ferry Reservoir exception: Catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession any size) · License required
Brown Trout — Clark Canyon Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout) for brown trout. Clark Canyon Reservoir exception: combined trout - 3 daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout) · License required
Brown Trout — Clark Fork River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit Upstream from Perkins Lane Bridge: 0 (catch-and-release only); Perkins Lane Bridge to mouth of the Flathead River: 3 daily and in possession (combined trout), only 1 over 14 inches long for brown trout. Perkins Lane Bridge to mouth of the Flathead River: only 1 over 14 inches long. Clark Fork River exceptions: see reach rules; Thompson Falls Dam to Idaho border - combined trout: standard lake daily and possession limits apply. Elsewhere on the river, the standard Western District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Upstream from Perkins Lane Bridge: open entire year (catch-and-release only). Perkins Lane Bridge to mouth of the Flathead River: General Season third Saturday in May through Nov. 30, catch-and-release for trout Dec. 1 to third Saturday in May. Mouth of Flathead River to Idaho border: open entire year · Daily limit: Upstream from Perkins Lane Bridge: 0 (catch-and-release only); Perkins Lane Bridge to mouth of the Flathead River: 3 daily and in possession (combined trout), only 1 over 14 inches long · Size limit: Perkins Lane Bridge to mouth of the Flathead River: only 1 over 14 inches long. · License required
Brown Trout — Gallatin River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout for brown trout. Only 1 over 18 inches. Gallatin River exceptions: Yellowstone National Park to East Gallatin River - closed to fishing from boats/vessels. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year; Porcupine Creek Road to West Fork Gallatin River: open third Saturday in May through Nov. 30 · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout · Size limit: Only 1 over 18 inches. · License required
Brown Trout — Hauser Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size) for brown trout. Hauser Reservoir exception: Catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size) · License required
Brown Trout — Holter Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size) for brown trout. Holter Reservoir exception: Catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size) · License required
Brown Trout — Jefferson River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches and only 1 may be a rainbow trout for brown trout. Only 1 over 18 inches (combined trout). Jefferson River exception (entire river): combined trout - 3 daily and in possession, only 1 over 18 inches and only 1 may be a rainbow trout. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches and only 1 may be a rainbow trout · Size limit: Only 1 over 18 inches (combined trout). · License required
Brown Trout — Kootenai River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit No limit; all brown trout caught between Libby Dam and Kootenai Falls must be killed immediately, kept, and the entire fish presented to FWP for brown trout. Kootenai River exception: brown trout - no limit. All brown trout caught between Libby Dam and Kootenai Falls must be killed immediately, kept, and the entire fish presented to FWP. Anglers who catch brown trout upstream of Kootenai Falls are required to report the catch to FWP within 24 hours (406-752-5501) and to present the whole brown trout to a FWP office during regular business hours within 10 days of capture. Edible portions of the fish are returned to the angler upon request. The season is segment-dependent; the two listed reaches cover the river from Libby Dam to the Idaho border. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Libby Dam to Highway 37 Bridge (near Fisher River): open June 1 through Feb. 28. Highway 37 Bridge to Idaho border: open entire year · Daily limit: No limit; all brown trout caught between Libby Dam and Kootenai Falls must be killed immediately, kept, and the entire fish presented to FWP · License required
Brown Trout — Madison River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Quake Lake outlet to Varney Bridge: 0 (catch-and-release for trout, except anglers 14 years of age or younger may take 1 trout daily and in possession, any size); other reaches: 3 daily and in possession (combined trout), only 1 over 18 inches for brown trout. Combined trout reaches: only 1 over 18 inches. Madison River exceptions: catch-and-release for trout from Quake Lake outlet to Varney Bridge (youth exception applies); reach-specific tackle rules as listed for rainbow trout. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Quake Lake outlet to Varney Bridge: 0 (catch-and-release for trout, except anglers 14 years of age or younger may take 1 trout daily and in possession, any size); other reaches: 3 daily and in possession (combined trout), only 1 over 18 inches · Size limit: Combined trout reaches: only 1 over 18 inches. · License required
Brown Trout — Marias River (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 5 daily and in possession (combined trout), only 1 over 18 inches for brown trout. Only 1 over 18 inches. Marias River exception: combined trout - 5 daily and in possession, only 1 over 18 inches. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession (combined trout), only 1 over 18 inches · Size limit: Only 1 over 18 inches. · License required
Brown Trout — Missouri River (Montana) (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Toston Dam to Canyon Ferry Reservoir and Hauser Dam tailwater reaches: 0 (catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size); Holter Dam to Black Eagle Dam: 3 daily and in possession (combined trout), only 1 over 18 inches, and only 1 may be a brown trout for brown trout. Holter Dam to Black Eagle Dam: only 1 over 18 inches and only 1 of the combined trout may be a brown trout. Missouri River exceptions: Toston Dam to Canyon Ferry Reservoir - Catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size. Big Springs spawning area closed as posted from March 1 through June 15. Hauser Dam to Holter Reservoir (Hauser Dam downstream to American Bar Gulch, approximately 4.6 miles) - combined trout: standard river/stream limits apply, except catch-and-release for brown trout. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Toston Dam to Canyon Ferry Reservoir and Hauser Dam tailwater reaches: 0 (catch-and-release for brown trout, except anglers 14 years of age or younger may take 1 brown trout daily and in possession, any size); Holter Dam to Black Eagle Dam: 3 daily and in possession (combined trout), only 1 over 18 inches, and only 1 may be a brown trout · Size limit: Holter Dam to Black Eagle Dam: only 1 over 18 inches and only 1 of the combined trout may be a brown trout. · License required
Brown Trout — Rock Creek (near Missoula) (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 brown trout daily and in possession (combined trout) for brown trout. Rock Creek (near Missoula) exception (from the confluence of the Middle and West forks, near Philipsburg, to the mouth): combined trout - 3 brown trout daily and in possession. This exception applies to the entire stream as listed. Artificial lures only, except anglers 14 years of age or younger may use bait during the general season. Closed to fishing from boats/vessels July 1 through Nov. 30. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30, unless otherwise specified in Exceptions to Standard Regulations · Daily limit: 3 brown trout daily and in possession (combined trout) · License required
Brown Trout — Ruby River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Ruby Dam to Alder Bridge (Ruby Island FAS): 0 (catch-and-release); Alder Bridge (Ruby Island FAS) to the mouth: 1 daily and in possession, must be less than 18 inches for brown trout. Alder Bridge to the mouth: must be less than 18 inches. Ruby River exceptions: Ruby Dam to Alder Bridge - catch-and-release for brown trout, open April 1 through Sept. 30. Alder Bridge to the mouth - brown trout: 1 daily and in possession, must be less than 18 inches. Closed entire year just below Ruby Dam (from the confluence with the Ruby Dam outlet channel upstream to the dam, including the outlet channel). Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Ruby Dam to Alder Bridge (Ruby Island FAS): open April 1 through Sept. 30. Confluence with Sweetwater Creek to Ruby Reservoir: open third Saturday in May through Nov. 30. Other reaches: open all year · Daily limit: Ruby Dam to Alder Bridge (Ruby Island FAS): 0 (catch-and-release); Alder Bridge (Ruby Island FAS) to the mouth: 1 daily and in possession, must be less than 18 inches · Size limit: Alder Bridge to the mouth: must be less than 18 inches. · License required
Brown Trout — Smith River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Camp Baker Bridge to Eden Bridge: 3 under 13 inches daily and in possession and only 1 over 22 inches daily and in possession (combined trout) for brown trout. Combined trout: 3 under 13 inches and only 1 over 22 inches daily and in possession. Smith River exception (Camp Baker Bridge to Eden Bridge): combined trout - 3 under 13 inches daily and in possession and only 1 over 22 inches daily and in possession. Artificial lures only, except anglers 14 years of age or younger may use bait. These limits apply within the Camp Baker Bridge to Eden Bridge reach that this water entry represents. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Camp Baker Bridge to Eden Bridge: 3 under 13 inches daily and in possession and only 1 over 22 inches daily and in possession (combined trout) · Size limit: Combined trout: 3 under 13 inches and only 1 over 22 inches daily and in possession. · License required
Brown Trout — Yellowstone River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout for brown trout. Only 1 over 18 inches. Central District standard: combined trout includes brown trout, rainbow trout, golden trout, cutthroat trout, and arctic grayling. All arctic grayling must be released immediately. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout · Size limit: Only 1 over 18 inches. · License required
Bull Trout — Flathead River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 - all waters are closed to angling for bull trout for bull trout. All fish must be released, with no delay, unless otherwise authorized in the Western District Exceptions. Western District standard regulation: all waters are closed to angling for bull trout and all fish must be released, with no delay, unless otherwise authorized in the Western District Exceptions. Federal rules prohibit the attempted take of bull trout unless specifically authorized by state or tribal regulation. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 - all waters are closed to angling for bull trout · Size limit: All fish must be released, with no delay, unless otherwise authorized in the Western District Exceptions. · License required
Montana Western Fishing District limits — daily limit 1 fish per license year from the third Saturday in May through Aug. 15 - harvest applies only in the Dam to Crossover Boat Ramp section; catch-and-release elsewhere on the reservoir and the rest of the year for bull trout. Hungry Horse Reservoir exception (Dam to Crossover Boat Ramp): bull trout - 1 fish per license year from the third Saturday in May through Aug. 15, catch-and-release the rest of the year with a Hungry Horse/South Fork Flathead permit validation on Fishing License. A Hungry Horse/South Fork Flathead Bull Trout Catch Card must be in possession when fishing for bull trout. Bull trout must be released with no delay or be killed and counted as your limit when harvest is allowed. It is unlawful to possess a live bull trout for any reason. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Harvest allowed Dam to Crossover Boat Ramp: 1 fish per license year from the third Saturday in May through Aug. 15; catch-and-release the rest of the year · Daily limit: 1 fish per license year from the third Saturday in May through Aug. 15 - harvest applies only in the Dam to Crossover Boat Ramp section; catch-and-release elsewhere on the reservoir and the rest of the year · License required
Bull Trout — Kootenai River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 - all waters are closed to angling for bull trout for bull trout. All fish must be released, with no delay, unless otherwise authorized in the Western District Exceptions. Kootenai River exception: as per the District Standard Regulations, the Kootenai River is closed to angling for bull trout; any bull trout caught must be released, with no delay. The season is segment-dependent; the two listed reaches cover the river from Libby Dam to the Idaho border. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Libby Dam to Highway 37 Bridge (near Fisher River): open June 1 through Feb. 28. Highway 37 Bridge to Idaho border: open entire year · Daily limit: 0 - all waters are closed to angling for bull trout · Size limit: All fish must be released, with no delay, unless otherwise authorized in the Western District Exceptions. · License required
Bull Trout — Lake Koocanusa (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for bull trout. All bull trout must be released with no delay. Lake Koocanusa exception: bull trout - catch-and-release only (all bull trout must be released with no delay). A Lake Koocanusa bull trout Catch Card must be in possession when fishing for bull trout. It is unlawful to possess a live bull trout for any reason. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release only) · Size limit: All bull trout must be released with no delay. · License required
Burbot — Bighorn Lake (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession for burbot. Bighorn Lake exception: burbot (ling) - 3 daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession · License required
Burbot — Clark Canyon Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 over 23 inches daily and in possession for burbot. Over 23 inches. Clark Canyon Reservoir exception: burbot (ling) - 3 over 23 inches daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 over 23 inches daily and in possession · Size limit: Over 23 inches. · License required
Burbot — Fort Peck Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 5 daily and in possession for burbot. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession · License required
Burbot — Lake Koocanusa (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 2 daily and in possession for burbot. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 2 daily and in possession · License required
Channel Catfish — Bighorn Lake (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 6 daily and in possession for channel catfish. Bighorn Lake exception: channel catfish - 6 daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 6 daily and in possession · License required
Channel Catfish — Bighorn River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 10 daily and in possession for channel catfish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Channel Catfish — Fort Peck Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 10 daily and 20 in possession for channel catfish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and 20 in possession · License required
Channel Catfish — Missouri River (Montana) (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 10 daily and in possession for channel catfish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Channel Catfish — Musselshell River (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 10 daily and in possession for channel catfish. Musselshell River exception (downstream from where North and South forks meet to confluence with Fort Peck): channel catfish - 10 daily and in possession. Elsewhere on the river, the standard Eastern District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Channel Catfish — Tongue River Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 10 daily and 20 in possession for channel catfish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and 20 in possession · License required
Channel Catfish — Yellowstone River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 10 daily and in possession for channel catfish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Chinook Salmon — Fort Peck Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 5 daily and 10 in possession (salmon - kokanee and chinook) for chinook salmon. Fort Peck Reservoir exceptions: spearing - chinook salmon and lake trout may be taken by spear or gig through the ice Dec. 1 through March 31. Snagging - allowed only for chinook salmon from Oct. 1 through Nov. 30. Bow and Arrow - allowed for chinook salmon from Oct. 1 through Oct. 15. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and 10 in possession (salmon - kokanee and chinook) · License required
Cutthroat Trout — Bitterroot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 daily and in possession for cutthroat trout. None over 12 inches. Bitterroot River exception: during the Extended Season (Dec. 1 to the third Saturday in May) trout fishing is catch-and-release only, with artificial lures, maggots and/or aquatic insects only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30; catch-and-release for all trout Dec. 1 to third Saturday in May · Daily limit: 3 daily and in possession · Size limit: None over 12 inches. · License required
Cutthroat Trout — Blackfoot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for cutthroat trout. All cutthroat trout must be released. Blackfoot River exception: catch-and-release for cutthroat trout. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30, unless otherwise specified in Exceptions to Standard Regulations · Daily limit: 0 (catch-and-release only) · Size limit: All cutthroat trout must be released. · License required
Cutthroat Trout — Clark Fork River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for cutthroat trout. All cutthroat trout must be released. Clark Fork River exceptions: catch-and-release for cutthroat trout in all reaches from Perkins Lane Bridge downstream to the Idaho border. This catch-and-release requirement for cutthroat trout applies only within the Clark Fork River; elsewhere the standard Western District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Upstream from Perkins Lane Bridge: open entire year. Perkins Lane Bridge to mouth of the Flathead River: General Season third Saturday in May through Nov. 30. Mouth of Flathead River to Idaho border: open entire year · Daily limit: 0 (catch-and-release only) · Size limit: All cutthroat trout must be released. · License required
Cutthroat Trout — Flathead Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for cutthroat trout. All cutthroat trout must be released. Flathead Lake exception: catch-and-release for cutthroat trout. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 0 (catch-and-release only) · Size limit: All cutthroat trout must be released. · License required
Cutthroat Trout — Flathead River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for cutthroat trout. All cutthroat trout must be released. Flathead River exception: catch-and-release for cutthroat trout. Hooks/lures must have single points, no double or treble hooks. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Montana Western Fishing District limits — daily limit 3 daily and in possession for cutthroat trout. No size limit. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession · Size limit: No size limit. · License required
Cutthroat Trout — Rock Creek (near Missoula) (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 0 (catch-and-release only) for cutthroat trout. All cutthroat trout must be released. Rock Creek (near Missoula) exception: catch-and-release for rainbow trout and cutthroat trout. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30; catch-and-release for trout Dec. 1 to third Saturday in May with artificial lures and/or maggots only · Daily limit: 0 (catch-and-release only) · Size limit: All cutthroat trout must be released. · License required
Cutthroat Trout — Yellowstone River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Yellowstone National Park boundary to Pine Creek Bridge: 0 (catch-and-release for cutthroat trout); I-90 Bridge at Billings to the mouth of the Bighorn River: 5 daily and in possession (combined trout), only 1 over 18 inches, all may be cutthroat trout for cutthroat trout. Billings to Bighorn River reach: only 1 over 18 inches. Yellowstone River exceptions: Yellowstone National Park boundary to Pine Creek Bridge - catch-and-release for cutthroat trout. I-90 Bridge at Billings to the mouth of the Bighorn River - combined trout: 5 daily and in possession, only 1 over 18 inches, all may be cutthroat trout. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Yellowstone National Park boundary to Pine Creek Bridge: 0 (catch-and-release for cutthroat trout); I-90 Bridge at Billings to the mouth of the Bighorn River: 5 daily and in possession (combined trout), only 1 over 18 inches, all may be cutthroat trout · Size limit: Billings to Bighorn River reach: only 1 over 18 inches. · License required
Kokanee — Georgetown Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit No daily or possession limit for kokanee. Georgetown Lake exception: kokanee salmon - no daily or possession limit. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through March 31, except the South and East shoreline area (all waters from shore or within 100 yards of shore from a point 200 yards west of Lakeside at Georgetown Marina, including all of Stuart Mill Bay, to a point 200 yards north of the mouth of North Fork Flint Creek) is only open July 1 through March 31; elsewhere on Georgetown Lake, open third Saturday in May through March 31 · Daily limit: No daily or possession limit · License required
Kokanee — Hauser Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 5 trout and kokanee salmon daily in any combination and 10 trout and kokanee salmon in possession in any combination for kokanee. Hauser Reservoir exception: combined trout and kokanee salmon - 5 daily and 10 in possession in any combination. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 trout and kokanee salmon daily in any combination and 10 trout and kokanee salmon in possession in any combination · License required
Kokanee — Holter Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 5 rainbow trout and kokanee salmon daily in any combination and 10 rainbow trout and kokanee salmon in possession in any combination for kokanee. Holter Reservoir exception: combined trout and kokanee salmon - 5 daily and 10 in possession in any combination. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 rainbow trout and kokanee salmon daily in any combination and 10 rainbow trout and kokanee salmon in possession in any combination · License required
Kokanee — Lake Koocanusa (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 50 daily and 100 in possession for kokanee. Lake Koocanusa exception: kokanee salmon - 50 daily and 100 in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 50 daily and 100 in possession · License required
Kokanee — Lake Mary Ronan (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 10 daily and 20 in possession for kokanee. Lake Mary Ronan exception: kokanee salmon - 10 daily and 20 in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and 20 in possession · License required
Kokanee — Seeley Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 10 daily and 20 in possession for kokanee. Seeley Lake exception: kokanee salmon - 10 daily and 20 in possession. Snagging: open for kokanee salmon Oct. 15 through Dec. 31; 20 daily and 40 in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and 20 in possession · License required
Lake Trout — Flathead Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 100 daily and in possession, only 1 over 36 inches for lake trout. Only 1 over 36 inches, and all fish 30 to 36 inches must be released. Flathead Lake exception (north of Flathead Indian Reservation boundary). A Flathead Indian Reservation Tribal Permit is required to fish on the southern portion of the lake; check Tribal fishing regulations for the south portion of the lake. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 100 daily and in possession, only 1 over 36 inches · Size limit: Only 1 over 36 inches, and all fish 30 to 36 inches must be released. · License required
Lake Trout — Fort Peck Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 3 daily and 6 in possession for lake trout. Fort Peck Reservoir exception: chinook salmon and lake trout may be taken by spear or gig through the ice Dec. 1 through March 31. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and 6 in possession · License required
Lake Whitefish — Flathead Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for lake whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Largemouth Bass — Lake Mary Ronan (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 5 daily and in possession, only 1 greater than 12 inches; third Saturday in May through June 30: 1 daily and in possession, must be over 22 inches for largemouth bass. Only 1 greater than 12 inches; third Saturday in May through June 30 the single fish kept must be over 22 inches. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession, only 1 greater than 12 inches; third Saturday in May through June 30: 1 daily and in possession, must be over 22 inches · Size limit: Only 1 greater than 12 inches; third Saturday in May through June 30 the single fish kept must be over 22 inches. · License required
Montana Western Fishing District limits — daily limit 5 daily and in possession (largemouth and smallmouth combined); except June 15 through July 15 only 1 daily and in possession, 22 inch minimum for largemouth bass. June 15 through July 15: 22 inch minimum. Clark Fork River exception (Thompson Falls Dam to Idaho border): bass (largemouth and smallmouth combined) - 5 daily and in possession; except June 15 through July 15 only 1 daily and in possession, 22 inch minimum. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession (largemouth and smallmouth combined); except June 15 through July 15 only 1 daily and in possession, 22 inch minimum · Size limit: June 15 through July 15: 22 inch minimum. · License required
Largemouth Bass — Seeley Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit No daily or possession limit for entire year for largemouth bass. Seeley Lake exception: bass - no daily or possession limit for entire year. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: No daily or possession limit for entire year · License required
Mountain Whitefish — Beaverhead River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Clark Canyon Dam to Pipe Organ Bridge: open third Saturday in May through Sept. 30. Barretts Diversion to the mouth: open April 1 through Sept. 30. Other reaches: open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Big Hole River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Big Hole River season is segment-dependent; the listed reaches cover the river from its headwaters to its mouth. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Headwaters to Dickie Bridge: open all year. Dickie Bridge to the mouth: open April 1 through Sept. 30 · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Bitterroot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Bitterroot River exception (entire river including East Fork downstream from Star Falls and West Fork downstream from Painted Rocks Dam): during the Extended Season (Dec. 1 to the third Saturday in May), extended season for northern pike and whitefish and catch-and-release for all trout. Artificial lures, maggots and/or aquatic insects only; all other live/dead bait prohibited. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30; extended season for northern pike and whitefish open Dec. 1 to third Saturday in May · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Blackfoot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Blackfoot River exception: extended season for mountain whitefish and catch-and-release for trout open Dec. 1 to third Saturday in May on the mainstem only; tributaries are closed to fishing during the extended season. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30; extended season for mountain whitefish open Dec. 1 to third Saturday in May (mainstem only) · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Clark Fork River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Clark Fork River exception: extended season for northern pike and whitefish open Dec. 1 to third Saturday in May; artificial lures and/or maggots only during the extended season. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30; extended season for whitefish open Dec. 1 to third Saturday in May · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Flathead River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Gallatin River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Jefferson River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Kootenai River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Kootenai River season is segment-dependent; the two listed reaches cover the river from Libby Dam to the Idaho border. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Libby Dam to Highway 37 Bridge (near Fisher River): open June 1 through Feb. 28. Highway 37 Bridge to Idaho border: open entire year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Madison River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Missouri River (Montana) (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Missouri River: whitefish - 20 daily and 40 in possession (district standard). Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Rock Creek (near Missoula) (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Rock Creek (near Missoula) exception: extended season for whitefish and catch-and-release for trout open Dec. 1 to third Saturday in May with artificial lures and/or maggots only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30; extended season for whitefish open Dec. 1 to third Saturday in May with artificial lures and/or maggots only · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Ruby River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Smith River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Mountain Whitefish — Yellowstone River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 20 daily and 40 in possession (whitefish) for mountain whitefish. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 20 daily and 40 in possession (whitefish) · License required
Northern Pike — Bitterroot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 15 daily, no possession limit for northern pike. Bitterroot River exception: extended season for northern pike and whitefish and catch-and-release for all trout open Dec. 1 to third Saturday in May. Artificial lures, maggots and/or aquatic insects only during the extended season. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30; extended season for northern pike and whitefish open Dec. 1 to third Saturday in May · Daily limit: 15 daily, no possession limit · License required
Montana Central Fishing District limits — daily limit No limit for northern pike. Canyon Ferry Reservoir exception: northern pike - no limit. Spearing: open for northern pike through the ice. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: No limit · License required
Northern Pike — Clark Fork River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit No limit for northern pike. Clark Fork River exception (Perkins Lane Bridge to mouth of the Flathead River): northern pike - no limit. During the Extended Season (Dec. 1 to the third Saturday in May), extended season for northern pike and whitefish; artificial lures and/or maggots only, all other live/dead bait prohibited. Elsewhere on the river, the standard Western District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30; extended season for northern pike and whitefish open Dec. 1 to third Saturday in May · Daily limit: No limit · License required
Northern Pike — Fort Peck Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 10 daily and in possession for northern pike. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Northern Pike — Gallatin River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit No limit (entire river) for northern pike. Gallatin River exception (entire river): northern pike - no limit. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Montana Central Fishing District limits — daily limit No limit for northern pike. Hauser Reservoir exception: northern pike - no limit. Spearing: open for northern pike through the ice. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Montana Central Fishing District limits — daily limit No limit for northern pike. Holter Reservoir exception: northern pike - no limit. Spearing: open for northern pike through the ice. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: No limit · License required
Northern Pike — Jefferson River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit No limit (entire river) for northern pike. Jefferson River exception (entire river): northern pike - no limit. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: No limit (entire river) · License required
Northern Pike — Lake Elwell (Tiber Reservoir) (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 10 daily and in possession for northern pike. Lake Elwell (Tiber Reservoir) exception: spearing - open for nongame fish, northern pike, and walleye through the ice and by persons swimming or submerged. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Northern Pike — Madison River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Ennis Dam to the mouth: no limit; elsewhere 10 daily and in possession (Central District standard) for northern pike. Madison River exception (Ennis Dam to the mouth): northern pike - no limit. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Ennis Dam to the mouth: no limit; elsewhere 10 daily and in possession (Central District standard) · License required
Northern Pike — Missouri River (Montana) (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Confluence of Madison and Jefferson Rivers to Holter Dam (and Toston Dam Reservoir, and Toston Dam to Canyon Ferry, and Hauser reaches, and Holter Dam to Black Eagle Dam): no limit for northern pike. Missouri River exceptions: northern pike - no limit from the confluence of the Madison and Jefferson Rivers to Holter Dam and in the reaches downstream through Black Eagle Dam. Toston Dam Reservoir: spearing allowed through the ice only. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: Confluence of Madison and Jefferson Rivers to Holter Dam (and Toston Dam Reservoir, and Toston Dam to Canyon Ferry, and Hauser reaches, and Holter Dam to Black Eagle Dam): no limit · License required
Montana Western Fishing District limits — daily limit 15 daily, no possession limit for northern pike. Western District standard: all waters are open for spearing northern pike through the ice and in open water by a person swimming or submerged, or as otherwise noted in District Exceptions. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 15 daily, no possession limit · License required
Northern Pike — Seeley Lake (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit No limit for northern pike. Seeley Lake exception: northern pike - no limit. Spearing: open for northern pike. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: No limit · License required
Northern Pike — Tongue River Reservoir (Eastern District)
Montana, United States
Montana Eastern Fishing District limits — daily limit 10 daily and in possession for northern pike. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 10 daily and in possession · License required
Rainbow Trout — Beaverhead River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 0 (catch-and-release only, entire river) for rainbow trout. All rainbow trout must be released. Beaverhead River exception (entire river): rainbow trout - catch-and-release only. Clark Canyon Dam to High Bridge FAS: artificial lures and single-pointed hooks only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Clark Canyon Dam to Pipe Organ Bridge: open third Saturday in May through Sept. 30. Barretts Diversion to the mouth: open April 1 through Sept. 30 · Daily limit: 0 (catch-and-release only, entire river) · Size limit: All rainbow trout must be released. · License required
Rainbow Trout — Big Hole River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit Headwaters to Dickie Bridge: 5 daily and in possession (combined trout), no size restriction; Dickie Bridge to Brownes Bridge FAS and Brownes Bridge FAS to the mouth: 0 (catch-and-release only) for rainbow trout. Headwaters to Dickie Bridge: no size restriction. Big Hole River exceptions: Headwaters to Dickie Bridge - combined trout 5 daily and in possession, no size restriction. Dickie Bridge to Brownes Bridge FAS - open April 1 through Sept. 30, catch-and-release only, artificial lures only. Brownes Bridge FAS to the mouth - open April 1 through Sept. 30, catch-and-release only. Elsewhere on the river, the standard Central District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Headwaters to Dickie Bridge: open all year. Dickie Bridge to Brownes Bridge FAS: open April 1 through Sept. 30 (artificial lures only). Brownes Bridge FAS to the mouth: open April 1 through Sept. 30 · Daily limit: Headwaters to Dickie Bridge: 5 daily and in possession (combined trout), no size restriction; Dickie Bridge to Brownes Bridge FAS and Brownes Bridge FAS to the mouth: 0 (catch-and-release only) · Size limit: Headwaters to Dickie Bridge: no size restriction. · License required
Rainbow Trout — Bighorn River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout for rainbow trout. Only 1 over 18 inches. Bighorn River exception (entire river): a State of Montana Fishing License is required for all anglers to fish on the Bighorn River within the boundaries of the Crow Reservation; a tribal permit is not required. Cable 600 feet below Afterbay Dam to Bighorn FAS: artificial lures only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout · Size limit: Only 1 over 18 inches. · License required
Rainbow Trout — Bitterroot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 14 inches for rainbow trout. Only 1 over 14 inches. Bitterroot River exception: during the Extended Season (Dec. 1 to the third Saturday in May) trout fishing is catch-and-release only, with artificial lures, maggots and/or aquatic insects only. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open third Saturday in May through Nov. 30; catch-and-release for all trout Dec. 1 to third Saturday in May · Daily limit: 3 daily and in possession (combined trout), only 1 over 14 inches · Size limit: Only 1 over 14 inches. · License required
Rainbow Trout — Blackfoot River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 rainbow trout over 14 inches long, any size brown trout for rainbow trout. Only 1 rainbow trout over 14 inches long. Blackfoot River exception (mainstem and all tributaries except the Clearwater River): combined trout - 3 daily and in possession, only 1 rainbow trout over 14 inches long, any size brown trout. Artificial lures only within 100-yard radius of the mouths of Belmont Creek, Copper Creek, Gold Creek, Monture Creek and North Fork Blackfoot River. Extended season (mainstem only, Dec. 1 to third Saturday in May): artificial lures and/or maggots only, all other live/dead bait prohibited. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: General Season third Saturday in May through Nov. 30 (mainstem and tributaries); mainstem only: catch-and-release for trout Dec. 1 to third Saturday in May, tributaries closed during the extended season · Daily limit: 3 daily and in possession (combined trout), only 1 rainbow trout over 14 inches long, any size brown trout · Size limit: Only 1 rainbow trout over 14 inches long. · License required
Montana Central Fishing District limits — daily limit 5 daily and 10 in possession (combined trout, includes cutthroat trout) for rainbow trout. Central District standard: combined trout includes brown trout, rainbow trout, golden trout, cutthroat trout, and arctic grayling. All arctic grayling must be released immediately. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and 10 in possession (combined trout, includes cutthroat trout) · License required
Rainbow Trout — Clark Canyon Reservoir (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout) for rainbow trout. Clark Canyon Reservoir exception: combined trout - 3 daily and in possession. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 3 daily and in possession (combined trout) · License required
Rainbow Trout — Clark Fork River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit Upstream from Perkins Lane Bridge (near Warm Springs): 0 (catch-and-release only, artificial lures only); Perkins Lane Bridge to mouth of the Flathead River: 3 daily and in possession (combined trout), only 1 over 14 inches long for rainbow trout. Perkins Lane Bridge to mouth of the Flathead River: only 1 over 14 inches long. Clark Fork River exceptions. Upstream from Perkins Lane Bridge: catch-and-release only, artificial lures only, closed to fishing from boats/vessels. Perkins Lane Bridge to mouth of the Flathead River: combined trout 3 daily and in possession, only 1 over 14 inches long; artificial lures only within a 100-yard radius of the mouths of Rattlesnake Creek, Petty Creek, Fish Creek, Cedar Creek, Dry Creek, Trout Creek and St. Regis River; during the Extended Season (Dec. 1 to the third Saturday in May) artificial lures and/or maggots only. Thompson Falls Dam to Idaho border: combined trout - standard lake daily and possession limits apply. Elsewhere on the river, the standard Western District limits apply. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Upstream from Perkins Lane Bridge: open entire year (catch-and-release only). Perkins Lane Bridge to mouth of the Flathead River: General Season third Saturday in May through Nov. 30, catch-and-release for trout Dec. 1 to third Saturday in May. Mouth of Flathead River to Idaho border: open entire year · Daily limit: Upstream from Perkins Lane Bridge (near Warm Springs): 0 (catch-and-release only, artificial lures only); Perkins Lane Bridge to mouth of the Flathead River: 3 daily and in possession (combined trout), only 1 over 14 inches long · Size limit: Perkins Lane Bridge to mouth of the Flathead River: only 1 over 14 inches long. · License required
Rainbow Trout — Flathead River (Western District)
Montana, United States
Montana Western Fishing District limits — daily limit 5 daily and in possession for rainbow trout. Flathead River exception (confluence of North and Middle Forks to Flathead Lake): open entire year; rainbow trout 5 daily and in possession. This exception applies to the entire river as listed. Hooks/lures must have single points, no double or treble hooks. From Dec. 1 to third Saturday in May, maggots and artificial lures only; no artificial lures can be scented (infused, saturated, or applied). Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year · Daily limit: 5 daily and in possession · License required
Rainbow Trout — Gallatin River (Central District)
Montana, United States
Montana Central Fishing District limits — daily limit 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout for rainbow trout. Only 1 over 18 inches. Gallatin River exceptions: Yellowstone National Park to East Gallatin River - closed to fishing from boats/vessels. Porcupine Creek Road to West Fork Gallatin River - open third Saturday in May through Nov. 30. Source: 2026 Montana Fishing Regulations, Montana Fish, Wildlife & Parks, fwp.mt.gov/fish. This is an abbreviated summary, not a legal document. Confirm current regulations with Montana FWP before you fish.
Season: Open all year; Porcupine Creek Road to West Fork Gallatin River: open third Saturday in May through Nov. 30 · Daily limit: 3 daily and in possession (combined trout), only 1 over 18 inches, only 1 can be a cutthroat trout · Size limit: Only 1 over 18 inches. · License required