I recently purchased a home with a small pond. The pond is about 1/2 acre and the deepest spot is 9ft. The person I bought it from is an avid Bass fisherman and has kept it stocked well with large mouth bass. I myself could care less about catching a bass. The pond has a large population of bream and minnows. Do I need to remove the bass out of the pond or just add catfish and let them eat the bream? A commercial fisherman will be supplying me with 12" catfish. Also will it hurt to mix the type of catfish? I will supplement them with feed. How many fish do I need?