This must be a plague to0 Florida, but I saw a catfish that had upper and lower fins that ran the length of it's body in my pond this AM eating the fish food.

1. Is this a walking catfish?
2. Other than eating the food, is it a problem?
3. Other that waiting at the bank with my .45, is there a way to get rid of it/prevent others? My pond is about 250' from a public canal and at leat 600' from my neighbors pond. It is the rainy season here in Florida and condition might be right for them to travel.