Cutthroat Trout

Oncorhynchus clarkii

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  • Cutthroat Trout |  Photo: Stephanie Raine, USFWS
  • Cutthroat Trout |  Photo: Stephanie Raine, USFWS by v8.6m

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Basic Information






Cutthroat Trout are generally up to 39 inches in length.


Cutthroat Trout (Oncorhynchus clarkii) facts, description, habitat, range, pictures and fly fishing tips to help you catch and identify the fish.


Cascade, Rocky and Sierra Nevada mountain ranges to the pacific ocean.

What does the Cutthroat Trout look like?

There are least 10 subspecies of Cutthroat trout, all have the same morphology buy vary in coloration and spotting. A general rule is to expect a silver to brassy coloration with irregular spotting. Degrees vary from subspecies to subspecies. All tend to have a red coloration on the bottom of their lower jaw.

How to catch Cutthroat Trout

Tie your fly along the Lamar River in Yellowstone National Park for a great chance of pulling a few in, as well as some giant Rainbows.

Cutthroat Trout Facts

Cutthroat Trout are the state fish of Idaho, New Mexico, and Wyoming. Each subspecies is native to a specific geographic area. They were given the name "clarkii" in honor of William Clark of the Lewis and Clark Expedition. The name cutthroat refers to the red coloration on the bottom of their lower jaw.

Cutthroat Trout Distribution

See also