Prob something else caused the catfishes demise, the cleanup crew got them after they died. I put in 140 6-8" channel and blue cat in my 5 ac and haven't seen them since... They didn't come to the feeder at all and they were pellet raised I would think.....
I put a 1,000 that size in with some adult LMB in a small pond and never seen them again. LOL