HomeFish encyclopediaRay-finned fishesPerch-like fishGruntsLesson's thicklip Lesson's thicklip (Plectorhinchus lessonii) Scientific name: Plectorhinchus lessonii Cuvier, 1830 The Lesson's thicklip (Plectorhinchus lessonii) is a marine fish of the family Haemulidae. Native range: Western Pacific, Malaysia to Melanesia, north to Japan. BiologyDorsal spines (total): 12 - 13; Dorsal soft rays (total): 18-22; Anal spines: 3; Anal soft rays: 7 - 8. Juveniles under 10 cm resemble P. albovittatus. Adults closely resemble P. vittatus but lack stripes on the belly; with greenish black stripes over the back. Abdomen white.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlectorhinchus lessoniiFamilyHaemulidae (Grunts)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length40.0EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Pacific: Malaysia to Melanesia, north to Japan.Conservation status (IUCN)Not EvaluatedThreat 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