I've been searching for a while and can't find much on this. Does anyone buy fresh fish from the meat department at the grocery store and feed it to their catfish. I was thinking of getting some, cutting it up into chunks and freezing it till it goes in the tank. But I'm not sure if it's a good idea and I'm sure if there's any possible issues with using saltwater or freshwater fish as food. My redtail and shovelnose are eating me out of house and home. Anyone have experience with this?