Greasy Grouper

The Greasy Grouper is a large and robust predator named for the distinctively slimy, mucus-rich texture of its skin. It reaches up to 30 inches in captivity and features a brownish body covered in small dark spots, with a notably heavy and powerful build that reflects its position as an apex reef predator.

In the wild, Greasy Groupers are found throughout the Indo-Pacific, from the Red Sea and Persian Gulf to the Western Pacific. They inhabit coral reefs, rocky areas, and estuarine environments at depths of 1 to 60 meters. They are solitary ambush predators with a diet consisting of fish, crustaceans, and cephalopods.

In captivity, the Greasy Grouper requires a substantial aquarium of at least 300 gallons due to its large adult size and heavy bioload. It is a hardy species that adapts well to captive conditions but demands experienced care. The copious mucus production that gives this species its common name means strong filtration and regular water changes are essential.