Cutthroat trout ducks endangered species list Federal officials say they don't need to put the Bonneville cutthroat trout on the endangered or threatened species list, and that pleases Utah members of Trout Unlimited who have worked for decades to bring back the fish once thought extinct. The U.S. Fish and Wildlife Service announced Tuesday that self-sustaining Bonneville cutthroat trout populations are well distributed throughout its historic range and are being restored or protected in all currently occupied watersheds....