Native westslope cutthroat trout swim in the north fork of the Flathead River in northwestern Montana.
![Native westslope cutthroat trout swim in the north fork of the Flathead River in northwestern Montana.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/HybridFitness.jpg?itok=2x1KuHAP)
Detailed Description
Native westslope cutthroat trout swim in the north fork of the Flathead River in northwestern Montana. This region is recognized as a range-wide stronghold for genetically pure westslope cutthroat trout. However, rainbow trout invasion and hybridization threatens these populations.
Sources/Usage
Image courtesy of Jonny Armstrong.