Skip to main content

Mountain Whitefish

Mountain Whitefish

Mountain whitefish are one of only two salmonids native to Colorado, naturally occurring in the Yampa and White River drainages in the northwestern part of the state.

They have also been introduced to the Colorado River and Cache la Poudre River systems in the 1940s.

Physical Characteristics:
  • These silvery fish are easily distinguished from trout by their larger scales, small head compared to body size, down-turned mouth positioned under the snout, and prominent adipose fin.
  • Their coloration features a dark bluish-silver to brown back, silver sides, and white belly.

What to know

Habitat Distribution

  • Found in medium to large mountain streams, lakes, and reservoirs.

Key Locations

  • In Colorado rivers like the Eagle, Colorado, Roaring Fork, and White River.
  • In the Roaring Fork River near Vail, trophy-sized whitefish over 5 pounds are possible, with the IGFA fly fishing world record of nearly 6 pounds caught there.

Specific Spots

  • In Colorado waters, they typically inhabit deeper pools and runs, preferring areas with depths exceeding three feet.
  • Whitefish concentrate near tributary mouths and in deep pools during autumn spawning aggregations.
  • Focus on areas where you catch one whitefish as others are likely schooled nearby.
  • Look for concentrations below spawning areas of other species, where whitefish gather to feed on drifting e.g.gs.

Mountain Whitefish FAQ

Answers from onWater's species guide.

What are the best lures and bait for Mountain Whitefish in Colorado?

Small spinners like Panther Martins and Rooster Tails, or drift small baits like mealworms, maggots, garden worms, and salmon e.g.gs.

What flies work for Mountain Whitefish in Colorado?

Use small beadhead nymphs with sizes 14-20 being most effective. Top patterns include Prince Nymphs, Copper Johns, Pheasant Tail nymphs, Zebra Midges, and RS2 patterns. Small midge patterns with flash work exceptionally well, as do pale orange e.g.g patterns during spawning seasons of other fish.

When is the best time to fish for Mountain Whitefish in Colorado?

The best time to target mountain whitefish in Colorado is during fall through winter months, particularly from September through February. Target deep, slow holes and pools during the warmest part of winter days.

How do you catch Mountain Whitefish in Colorado?

For fly fishing, fish patterns deep using strike indicators and sufficient split shot to reach the bottom quickly. Nymphing with two-fly rigs is highly productive - try a heavier attractor nymph like a Prince with a smaller midge dropper. For spin fishing, drift small baits near the bottom.

What do Mountain Whitefish eat?

Mountain whitefish are bottom-oriented feeders that primarily consume aquatic insect larvae including chironomid midges, mayfly nymphs, caddisfly larvae, and stonefly nymphs. They also feed on snails, crayfish, amphipods, and occasionally fish e.g.gs during spawning seasons of other species.

Fish smarter with real-time insights

Whether you're en route and conditions shift or you're looking for the best spot based on current flows, we enable you to make informed decisions on the fly.

See it in the app

Most maps show you water.
onWater shows you Mountain Whitefish.

  1. 01 · Species map filter

    Map every Mountain Whitefish water

    Pick Mountain Whitefish and the map zeroes in on the waters they call home. No more guessing which lake holds them.

  2. 02 · Waterbody species

    Tap any water. See what lives there.

    Species, behavior and seasonal patterns for every lake, river and pond, before you leave the driveway.

  3. 03 · Angler Intelligence

    Ask how to catch Mountain Whitefish

    Tactics, gear and timing from onWater's AI fishing guide, tuned to the species and the water you're on.

Stop guessing where Mountain Whitefish are.

Open the map, filter by Mountain Whitefish, and head to water that holds them. Download onWater and plan your next trip in minutes.

  • Species map filter
  • Angler Intelligence
  • Fishing journal
Try onWater+ for free

Explore other species

Trout, bass, salmon, panfish and everything in between. Each guide unpacks the behavior, seasons, and tactics that put fish in the net.

No species information available.

Colorado licenses and regulations

Explore nearby waters

Smarter Fishing Starts in the App.

onWater Fish gives you everything you need to plan smarter, fish better, and own every trip from first cast to last.