Yellowstone Cutthroat (IMAGE)

University of Wyoming

Yellowstone Cutthroat

Caption

University of Wyoming researcher Lusha Tronstad holds a large cutthroat trout captured in Clear Creek, a tributary stream of Yellowstone Lake, when she was a Ph.D. student in spring 2005. The numbers of spawning cutthroats in the lake's tributaries has increased in recent years as a result of efforts to reduce the numbers of lake trout, whose presence has affected a number of other species in the Yellowstone Lake ecosystem since they were illegally introduced in the 1980s.

Credit

Lusha Alzner Photo

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