HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesBlackfin triplefin Blackfin triplefin (Helcogramma fuscopinna) Scientific name: Helcogramma fuscopinna Holleman, 1982 The Blackfin triplefin (Helcogramma fuscopinna) is a marine fish of the family Tripterygiidae. Native range: Indo-West Pacific, South Africa and Arabia to Taiwan and New Guinea. BiologyDorsal spines (total): 16 - 18; Dorsal soft rays (total): 10-12; Anal spines: 1; Anal soft rays: 19 - 21; Vertebrae: 37Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHelcogramma fuscopinnaFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.0Depth range0–10 m (0–33 ft)EnvironmentMarine; reef-associated; depth range 0 - 10 mClimateTropicalDistributionIndo-West Pacific: South Africa and Arabia to Taiwan and New Guinea.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