Puffers regularly need hard-shelled meals to wear down their ever-growing teeth. small live ghost shrimp and varieties of live snails that are perfect to wear down the teeth of the puffers. This doesn't have to be a daily feeding, but plan on doing it at least twice to three times a week. Living food is not as important as the crunchy shell that is on them. You will also need to plan on feeding the puffer small mollusks, shrimp, and krill with their shells on them quite often. I find that if you are feeding live clams with their shells on, crack them with a nutcracker or pliers first so the puffer will be able to get a purchase on it. All these things can be found at your local grocery store. People food is perfectly fine for your puffer, and I have never had any problem with the cheapest brands of seafood with my puffers.