Edible and used as a food fish. As with other tropical reef groupers, ciguatera poisoning is possible in some areas; consume only fish from reliable sources and follow local health advice.
Culinary quality / 5
3
Danger level
Harmless
Usual observation depth
5–30 m
Behaviour
Primarily solitary benthic grouper, remaining near shelter and ambushing prey. Adults may temporarily form breeding aggregations.
Observation zones
Coral reef, rocky reef, reef slope, lagoon, sheltered bay and reef rubble areas with crevices or coral cover.
Diet
Carnivore; feeds mainly on small fish and crustaceans, and can also capture other mobile benthic invertebrates.
Reproduction
Oviparous
Identification marks
Stocky grouper with a deep body and rounded caudal fin. The pale brown to grayish body and head bear numerous fine electric-blue lines, often particularly visible on the head and upper body.
Similar species
It can be confused with other groupers of the genus Cephalopholis. The brownbarred grouper (Cephalopholis boenak) has distinct dark bars rather than a dense network of fine blue lines, while the bluespotted grouper (Cephalopholis cyanostigma) has blue spots rather than lines.
Approach rules
Approach slowly and do not block its escape route; keep a respectful distance of approximately 2 to 3 m. Do not touch, chase, corner, or feed the animal. Avoid close and repeated flashes.
Protection
Assessed as Least Concern globally by the IUCN. It is not listed in the CITES appendices; fisheries and habitat measures may nevertheless vary by area.
