We evaluated the effectiveness of isolation management and stocking to meet protection and enhancement goals for native Colorado River cutthroat trout ( Oncorhynchus clarki pleuriticus ) in Wyoming ( U.S.A. ). As a management strategy of the Wyoming Game and Fish Department, cutthroat trout were isolated upstream of artificial barriers in small headwater streams. Non‐native trout that might have hybridized, competed with, or p...