I don't consider catfish to be much of a problem when it comes to muddying up water. If they were starving, I guess they could.

OK, I like catfish as long as they are channels. I like to watch them feed on pellets and they are fun to catch. I originally stocked 125 in a one acre pond and am now down to about a dozen whoppers that I save for the Grandkids to catch. When they are gone, I'll restock with 12 inch ones.