Thanks Sharptooth Bass for posting the pictures of my c. fowleri (top pic) and my former c. apurensis (bottom pic). I still have the fowleri cat, going on 13 years now. I did the same with keeping the tank stocked with goldfish when going away on two week fishing trips. While at home I hand feed 4 or 5 large nightcrawlers which the fish seems to prefer over goldfish even when they are available to her. I've read all the cautionary stuff about thiaminase or something in goldfish that's supposed to be bad for them but apparently doesn't seem to be a problem with the several cephalosilurus I've kept. The biggest worry with goldfish is they often are infested with ick but these fish seem to be immune to it. I once got some goldfish infected with anchor worms which in turn infected a mystus gullio catfiish in the same tank with the fowleri. The fowleri never was attacked by the anchor worms and I was able to cure the m. gullio. I noticed recently that Viktor has gotten his apurensis to eat Hikari Massivore which is surely a very safe bet to feed them. I've never tried to feed fish fillets or shrimp to these fish, tried pellets but they were ignored. With former red tail cats I used to feed gold fish with no problems, they also liked chunks of beef heart but the problem with that was that uneaten chunks hidden in the driftwood would end up rotten and covered with cotton like fungus, definitely not good. Of course not recommended by many on here, one of my red tail cat's favorite treat was chicken breast from Pollo Loco!