HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsFlagfin Flagfin (Plectranthias morgansi) Scientific name: Plectranthias morgansi Smith, 1961 The Flagfin (Plectranthias morgansi) is a marine fish of the family Serranidae. Native range: Western Indian Ocean, off Kenya and South Africa. BiologyDorsal spines (total): 10; Dorsal soft rays (total): 13-15; Anal spines: 3; Anal soft rays: 7. Gillraker with additional 4-5 rudiments on each limb.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlectranthias morgansiFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.0Depth range80–267 m (262–876 ft)EnvironmentMarine; demersal; depth range 80 - 267 mClimateTropicalDistributionWestern Indian Ocean: off Kenya and South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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