Does red tailed catfish eat superworms?
Red tailed catfish will eat just about anything, and superworms is probably a good food. They also need some plant matter so a good algae-based flake or pellet needs to be fed as well, if they will accept it. Live or frozen shrimp, krill, tubiflex worms, glassworms, mussels, clams, etc. can be offered as well. Nightcrawlers are one of the best foods. The main thing red tailed catfish eat is money. Yours is going to get 3-4 feet long and need an enormously large tank. Start thinking in the 1,000+ gallon range. They will also eat anything that will fit in their mouths, including tank decorations and tankmates. Edit: By the way, you can expect him to put on 18 inches or so in the first year.