The Hogfish is considered aggressive as it will bother fish of equal or larger size and may pick on fish that are introduced after it has become established. As an eager carnivorous eater, it can be assertive when food is presented and must be fed multi-times daily. In the wild, the Spanish Hogfish feeds on small crabs and shellfish, so caution must be used if placing the Hogfish in a reef aquarium. It may eat crabs, snails, shrimp, and Brittle Starfish. It may also harm clam mantles. To its favor, it will also eat nuisance pests such as bristleworms and mantis shrimp. This active fish requires a great deal of room to swim and is hardy and active.