This Cutthroat Trout was listed endangered on August 9, 1996. The trout lives in Umpqua River. The current estimated population. is unknown. People don't know whether they are increasing or decreasing in number. There's not that much information regarding how this trout became endangered.
The Cutthroat differs from all the other trout by their irregular small to medium size spots. They also don't develop brilliant colors like the inland cutthroat trout, which is a separate subspecies.