Recently caught a catfish in my backyard tank. Its shared with a few neighbors and is about 1.5 acres. I have never caught a catfish in my 15 years living here. Was thinking that the tank isn't big enough to support catfish or is this a parasite? I didn't throw him back. We have bass and perch in the tank.
It’s a parasite most of other fish will start showing them to. It comes from a fresh water snails about the size of B.B. Best way to remove them is to stock perch( red ear aka shell cracker). Not 100% sure on name because everyone calls them something different. Theses perch have very small mouths and most pond stocking farms sale them. Only takes a few years before the parasites are gone.