More than 1,700 cutthroat trout have been rescued from Mason Reservoir, according to Colorado Parks and Wildlife (CPW).

A Colorado River Cutthroat. / Photo by Mark Pickrel. When it comes to genetic diversity, the cutthroat blows all other trout out of the water. You’ll find them scattered across western North ...

With fewer cutthroat trout to feed on in Yellowstone Lake, bald eagles have turned to preying on other birds, including trumpeter swans, terns, loons, and other birds.

The three-year project concluded when stream-dwelling grayling and westslope cutthroat trout were planted in the drainage. Koel said Grebe Lake is producing 20-inch long Westslope cutthroat trout.

From the IFG: Westslope Cutthroat Trout are found in rivers (and some lakes) primarily throughout central and northern Idaho. They rarely exceed 20 inches, making this an exceptional catch.

Invasive species have been threatening Yellowstone’s native fish—Yellowstone and Westslope cutthroat trout and arctic grayling—since shortly after the park’s inception in 1872.

HELENA, Mont. — Glacier National Park is seeking public comment on an environmental assessment proposing westslope cutthroat and bull trout preservation on Gunsight Lake.

Glacier National Park officials are seeking public comment for a westslope cutthroat and bull trout preservation project at Gunsight Lake. The proposal calls for the removal of non-native rainbow ...

The Wyoming Game and Fish Department makes a concerted effort to protect, enhance and restore populations of Yellowstone cutthroat trout. In 2021, a new plan guiding fish management was finalized.

Native westslope cutthroat trout — a state-listed species of concern — in the St. Mary River drainage on the east side of Glacier National Park are at risk from hybridization with non-native fish.