HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsTwinspot grouper Twinspot grouper (Epinephelus bilobatus) Scientific name: Epinephelus bilobatus Randall & Allen, 1987 The Twinspot grouper (Epinephelus bilobatus) is a marine fish of the family Serranidae. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 17-18; Anal spines: 3; Anal soft rays: 8Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus bilobatusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length33.0Depth range4–50 m (13–164 ft)EnvironmentMarine; reef-associated; depth range 4 - 50 mClimateTropicalDistributionEastern Indian Ocean: known only from Western Australia. Was illustrated in color as Epinephelus maculatus by Allen (1985, ) and Sainsbury et al. (1985, ). This species have been much confused with other 'reticulated groupers' in literature, and many museum specimens have been misidentified.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceMedium, 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