Need some brainstorming from bigger brains than mine. I have a small fish pond around 3\4 of an acre i have stocked around 2000 catfish in it over the last 5 years fed them well they were in the 1 to 1 1/2 lb in size. About 3 years ago I stocked 300 bream and shellcracker , all of a sudden I can't catch a catfish at all. Nothing but bream come to the feed. No sign of otters or tresspassers no fish kills no pond overflow. I am stumped I even talked to the DNR about water quality they said everything was perfect. This is a mystery to me. Help please....