If the DNR can't help you, I certainly won't be able to figure it out. I'll take a guess anyway...
"About 3 years ago I stocked 300 bream and shellcracker , all of a sudden I can't catch a catfish at all"
Disease. The new fish brought in something that the catfish couldn't handle.
"About 3 years ago I stocked 300 bream and shellcracker , all of a sudden I can't catch a catfish at all"
Disease. The new fish brought in something that the catfish couldn't handle.