They were the only fish in the creek where I caught them, although there are some crayfish, water snakes, frogs, muskrats, and lots of water striders. In the subdivision drainage pond, however, there are other frog types, other waterbugs, crayfish, bluegill,
goldfish, some plecos, some african cichlids someone let go, and a bass (?peacock bass?) that someone let go. Lots of exotic fish show up every year in there, but the tropicals die every winter. I even found a fire eel in there one time. Right now, over half the pond is bluegill nest pits swarming with fry.