Mountain Whitefish

Mountain Whitefish (Prosopium williamsoni) fish species

Prosopium williamsoni

A slender, silvery native of B.C.'s cold rivers and lakes, the mountain whitefish has large scales, a small downturned mouth, and a single dorsal fin. Abundant and often overlooked, it is a reliable year-round catch and a favourite winter target, sharing a combined 15-fish whitefish quota across the province.

Cold, clear rivers and deep lakes; feeds on the bottom on insects and drifting eggs.

How to Catch Mountain Whitefish

Whether you're new to targeting Mountain Whitefish or refining your approach, success starts with matching your tactics to where the fish lives. Mountain Whitefish (Prosopium williamsoni) is typically found in river water and lake water, so concentrate your effort where those conditions line up. Mature Mountain Whitefish average around 12 inches, which helps you choose the right line, lure size, and tackle for the fight.

Where to Find Mountain Whitefish in the USA & Canada

Mountain Whitefish is recorded across a range of North American waters, including spots in Alaska, Alberta, British Columbia, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming. Browse the linked water guides below to see the specific lakes, rivers, and coastal waters where anglers report catching Mountain Whitefish, then plan a trip around the water closest to you.

Mountain Whitefish Fishing Regulations & Limits

Fishing rules for Mountain Whitefish vary by state and province. Before you head out, check the daily bag limits, minimum size limits, and open seasons that apply in your area. When FishFinder has matching records, the regulations link below takes you to the rules hub. Following local limits keeps Mountain Whitefish populations healthy for future seasons.

Related Water Guides for Mountain Whitefish

Explore these FishFinder water guides for places where Mountain Whitefish is recorded:

Mountain Whitefish Regulations

Review current FishFinder regulation records before targeting Mountain Whitefish:

Frequently Asked Questions

What kind of water is best for catching Mountain Whitefish?

Mountain Whitefish (Prosopium williamsoni) is typically found in river water and lake water. Focus your effort where those conditions line up to improve your chances.

How big does Mountain Whitefish get?

Mature Mountain Whitefish average around 12 inches, though individual fish can run larger. Matching your line, lure size, and tackle to that range makes for a better fight and landing rate.

Where can I catch Mountain Whitefish in the USA and Canada?

Mountain Whitefish is reported across North American waters, including spots in Alaska, Alberta, British Columbia, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming. Check the locations listed on this page to find the lakes, rivers, and coastal waters closest to you.

Do I need a fishing license to catch Mountain Whitefish?

A valid fishing license is required in most US states and Canadian provinces. Daily bag limits, minimum size limits, and open seasons for Mountain Whitefish vary by region, so review the regulations on this page and with your local wildlife authority before heading out.