Puffers have fused teeth that continuously grow, the teeth help them through the process of breaking exoskeletons or shells of their prey. In captivity where they are given prepared foods this can be an issue, as when their teeth have nothing to wear down on, they can keep growing causing the puffer discomfort. In order to avoid this consider offering your puffer some enrichment, meaning food such as clams, prawns or cockles that still have the shell on. Mappa Puffer pictured. Contact an account manager to learn more.