Groupers grow up to 12" in captivity and frequently outgrow the average-sized aquarium. The diet of these fish consists of fish, crustaceans, and cephalopods. A large aquarium with adequate hiding places is necessary to maintain Groupers.
Gobies are relatively small fish, usually reaching three inches in captivity. Goby fish species adjust well to aquarium life. A well-sealed lid is a requirement for keeping gobies, as they will jump out of an open aquarium.
Colorful and slow-moving these are some of the most interesting fish. Dragonets have special feeding requirements and should be housed in an established aquarium with large amounts of live rock and sand.