Skip to main content

Northern Pikeminnow

Northern Pikeminnow

The Northern Pikeminnow is Montana's largest native minnow species, found exclusively west of the Continental Divide in the Clark Fork drainage system. These are voracious predators that undergo a significant dietary shift as they mature.

They're an important native component of Montana's aquatic ecosystems.

Scientific Name: Ptychocheilus oregonensis

Physical Characteristics:

These predatory fish can reach impressive sizes - up to 27 inches and weights exceeding 7 pounds in Montana, with the state angling record at 7. 88 pounds.

They're distinguished from trout by their long head, toothless mouth, lack of adipose fin, and deeply forked tail.

What to know

Habitat Distribution

Found exclusively west of the Continental Divide in the Clark Fork drainage system. These fish prefer lakes and slow-moving river stretches with vegetation, particularly favoring quiet backwaters and sloughs.

Key Locations

Found in waters like Flathead Lake, various sloughs along the Flathead River, and other Clark Fork system waters.

Specific Spots

Target areas with structure like weed beds, drop-offs, and areas near cover in lakes, or quiet backwaters and slower sections of rivers. Northern Pikeminnow often hold in the same areas where you'd find bass or walleye. In Montana's Clark Fork drainage waters, focus on areas with moderate depths and nearby cover.

Northern Pikeminnow FAQ

Answers from onWater's species guide.

What are the best lures and bait for Northern Pikeminnow in Montana?

For bait fishing, use worms as the primary offering. Other effective baits include chicken liver, salmon eggs, fried chicken skin, fish guts, crayfish tails, and shrimp. For lure fishing, use spinners, crankbaits, or small spoons.

What flies work for Northern Pikeminnow in Montana?

When fly fishing, streamers and minnow-imitating patterns are most effective, particularly those suggesting the baitfish they naturally prey upon.

When is the best time to fish for Northern Pikeminnow in Montana?

Best from late spring through early fall, with peak activity when water temperatures are in the 50s-60s range.

How do you catch Northern Pikeminnow in Montana?

Three productive techniques work well: plunking (weighting bait to prevent drift while allowing natural movement), back bouncing (letting bait sink to bottom then lifting rod 1-2 feet and letting current drag it), and drift fishing. For lure fishing, work lures near the bottom where these fish typically feed.

What do Northern Pikeminnow eat?

Northern Pikeminnow are voracious predators that undergo a significant dietary shift as they mature - juveniles primarily consume aquatic insects, while adults become piscivorous, feeding heavily on smaller fish including young trout, sculpins, suckers, and other minnows.

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 Northern Pikeminnow.

  1. 01 · Species map filter

    Map every Northern Pikeminnow water

    Pick Northern Pikeminnow 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 Northern Pikeminnow

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

Stop guessing where Northern Pikeminnow are.

Open the map, filter by Northern Pikeminnow, 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.

Montana licenses and regulations

Explore nearby waters

Explore Montana waters

Top fishing waters

Popular Cities

Loading popular cities...

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.