The Kendall Warm Springs dace is federally listed as an endangered species due to its presence in only one location. This is currently the only federally listed fish species in Wyoming. Kendall Warm Springs is located entirely on the Bridger-Teton National Forest near Pinedale. Habitat protection is thus aided by federal ownership. Taking of the fish is prohibited by the Game and Fish Department and the U.S. Fish and Wildlife Service, but dace are plentiful inside this limited area and can be readily observed from the bank.
Nongame fish can indeed qualify as watchable wildlife.
But that doesn't really matter anyway. Watchable or not, nongame fish have a value of their own, apart from any value we may see in them. Many more examples of interesting nongame fish exist, but I had better save those for later just in case I'm ever assigned another traditional nongame fish article.