Topic summary
Westslope cutthroat trout
The Westslope cutthroat trout (Oncorhynchus lewisi) is a freshwatersalmonid in the cutthroat trout complex. The nominate subspecies, also known as the Missouri River cutthroat trout, is Oncorhynchus lewisi lewisi. The Westslope cutthroat trout is the Montana state fish. The Westslope cutthroat trout is a species of concern in Montana and British Columbia ranges and is considered threatened in its native range in Alberta.