Common name: graysby

General information

The Graysby, scientifically known as Cephalopholis cruentata, is a small species of grouper found in the Western Atlantic Ocean. It is recognized by its mottled brown and white coloration, with numerous small, dark-edged blue spots scattered across its body. This species is relatively small compared to other groupers, making it a suitable candidate for larger home aquariums.

Graysbys are solitary and territorial fish, often found lurking within coral crevices or hovering close to the reef structure. They are opportunistic predators, feeding primarily on small fish and crustaceans.

Care

In captivity, Graysbys require a spacious tank with plenty of rockwork and hiding places to mimic their natural habitat. They are carnivorous and should be fed a varied diet of meaty foods such as shrimp, squid, and small fish. Care should be taken to ensure that tank mates are not small enough to be considered prey, as Graysbys can be aggressive hunters.

Reproduction

Graysbys are protogynous hermaphrodites, meaning they are born female and have the ability to change to male later in life. In the wild, they form harems consisting of one male and several females. Breeding in captivity is rare, but environmental stability and proper diet can encourage spawning behavior.

Habitat

Graysbys are found in the Western Atlantic, from North Carolina to Brazil, including the Gulf of Mexico and the Caribbean Sea. They prefer reef environments, often at depths ranging from shallow waters to about 60 meters. In the aquarium, simulating this environment with live rock and a stable water quality is essential for their well-being.