HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsRock grouper Rock grouper (Epinephelus fasciatomaculosus) Scientific name: Epinephelus fasciatomaculosus Peters, 1865 The Rock grouper (Epinephelus fasciatomaculosus) is a marine fish of the family Serranidae. Native range: Western Pacific, southern Japan to Taiwan, China including Hainan, Hong Kong, Viet Nam, Philippines, and Sarawak, Malaysia. BiologyInhabits shallow rocky areas and feeds on small fishes, prawns, crabs, worms, and gastropods. An excellent food fish and brings a good price.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus fasciatomaculosusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length30.0Common length20.0EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Pacific: southern Japan to Taiwan, China including Hainan, Hong Kong, Viet Nam, Philippines, and Sarawak, Malaysia.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026