If you want to try fly fishing for trout in one of the premier locations in the Greater Yellowstone area, take a trip over to Snake River. Referred to by some fishermen as the center of the cutthroat trout universe, Snake River is one of only a few fishing spots where the trout outnumber the other natural species. You can also find other fish here, including brook trout, rainbow trout, brown trout, and mountain whitefish. With more than 4,500 trout per mile, Snake River is a trout fisherman’s paradise.