HomeFish encyclopediaRay-finned fishesPerch-like fishGruntsGiant sweetlips Giant sweetlips (Plectorhinchus obscurus) Scientific name: Plectorhinchus obscurus G?nther, 1872 The Giant sweetlips (Plectorhinchus obscurus) is a marine fish of the family Haemulidae. Native range: Indo-Pacific, Red Sea to Fiji, north to southern Japan, south to Australia and New Caledonia; throughout Micronesia. BiologyDorsal spines (total): 12 - 13; Dorsal soft rays (total): 17-20; Anal spines: 3; Anal soft rays: 7Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlectorhinchus obscurusFamilyHaemulidae (Grunts)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length100.0Depth range2–50 m (7–164 ft)EnvironmentMarine; reef-associated; depth range 2 - 50 mClimateTropicalDistributionIndo-Pacific: Red Sea to Fiji, north to southern Japan, south to Australia and New Caledonia; throughout Micronesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 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