Lahontan cutthroat trout (Oncorhynchus clarkii henshawi) is the only trout species native to Fallen Leaf Lake, Lake Tahoe and the Truckee River Basin but were extirpated by introduction of predatory non-native lake trout (Salvelinus namaycush), other competing non-native salmonids, and overfishing.
The Lahontan cutthroat trout (Oncorhynchus clarkii henshawi) was once a native species in Fallen Leaf Lake, Lake Tahoe, and the Truckee River Basin. Their presence was later threatened by the introduction of predatory non-native lake trout (Salvelinus namaycush), competing non-native salmonids, and overfishing.