HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsMarquesan grouper Marquesan grouper (Epinephelus irroratus) Scientific name: Epinephelus irroratus Forster, 1801 The Marquesan grouper (Epinephelus irroratus) is a marine fish of the family Serranidae. Native range: Pacific Ocean, known only from the Marquesan Islands and one specimen from Minami Tori Shima, Marcus Islands, Japan (although this report may be erroneous). BiologyDorsal spines (total): 11; Dorsal soft rays (total): 16; Anal spines: 3; Anal soft rays: 8Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus irroratusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length27.7EnvironmentMarine; reef-associatedClimateTropicalDistributionPacific Ocean: known only from the Marquesan Islands and one specimen from Minami Tori Shima, Marcus Islands, Japan (although this report may be erroneous).Conservation status (IUCN)Least Concern (LC), IUCN Grouper and Wrasse Specialist GroupThreat 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