HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesYellow triplefin Yellow triplefin (Enneapterygius abeli) Scientific name: Enneapterygius abeli Klausewitz, 1960 The Yellow triplefin (Enneapterygius abeli) is a marine fish of the family Tripterygiidae. BiologyDorsal spines (total): 14 - 16; Dorsal soft rays (total): 9-10; Anal spines: 1; Anal soft rays: 17 - 18. Bright yellow in color; males with black head and nape.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEnneapterygius abeliFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.5EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Indian Ocean: Red Sea, along East African coast to southern Kwazulu-Natal, Mauritius, Seychelles, Comoros and St. Brandon Shoals; not recorded in Gulf of Oman.Conservation status (IUCN)Least Concern (LC)Threat 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