I had to ask the seller what specific food they fed the Copperband because it's a really picky eater. Frozen mysis and artemia is pretty much the only stuff he touches. I tried various worms, fish eggs, cockles, masstick pase, artemia-based paste, many different mixed frozen food products... it's insane how picky it is. You really have to get lucky with the individual fish to get it to eat something like pellets in my opinion. Even specialized feeding stations so the fish associates a specific thing with food that he likes and can eat all on his own without being disturbed doesn't convince him to eat something else. It's been quite frustrating