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Lake Trout

Lake Trout

Lake trout in Idaho are non-native fish that were introduced to create trophy fisheries, now present in 16 hydrologic unit codes across the state. These char are among the largest freshwater fish, capable of reaching over 40 pounds and living up to 70 years.

Physical Characteristics:
  • Among the largest freshwater fish, capable of reaching over 40 pounds.
  • The species exhibits different morphotypes, with 'lean' fish in shallower water and larger 'fat' morphs in deeper areas.

What to know

Habitat Distribution

  • They inhabit deep, cold waters and are present in 16 hydrologic unit codes across the state, primarily in northern Idaho.

Key Locations

  • Lake Pend Oreille, Priest Lake, Upper Priest Lake, and various other waters in northern Idaho.

Specific Spots

  • In spring, focus on areas with current near tributary mouths and lake outlets where baitfish stage.
  • Target rocky shorelines, points, submerged reefs, areas with boulder substrate, structure like drop-offs, underwater humps, and rocky areas.
  • Typically inhabit depths greater than 50 feet.

Lake Trout FAQ

Answers from onWater's species guide.

What are the best lures and bait for Lake Trout in Idaho?

Large spoons like white-and-red Daredevils or yellow-and-red Five of Diamonds. Big swimbaits work well in spring.

What flies work for Lake Trout in Idaho?

Large streamers (4+ inches) in black with purple or pink accents, or mostly white patterns with contrasting colors - avoid monochromatic flies.

When is the best time to fish for Lake Trout in Idaho?

Spring (immediately after ice-out) and fall (before spawning) are best. Fall period should avoid September-November spawning time to prevent harassment of spawning fish. In summer, target deeper, cooler water.

How do you catch Lake Trout in Idaho?

Troll slowly over shallow sand flats or fast-troll up to 4 mph. Target depths of 10-20 feet during optimal seasons, though they can be found much deeper.

What do Lake Trout eat?

Primarily piscivorous predators feeding heavily on other fish species including kokanee salmon, rainbow trout, pygmy whitefish, and smaller lake trout. They also consume Mysis shrimp when present.

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Idaho licenses and regulations

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