HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesFourspot triplefin Fourspot triplefin (Helcogramma fuscipectoris) Scientific name: Helcogramma fuscipectoris Fowler, 1946 The Fourspot triplefin (Helcogramma fuscipectoris) is a marine fish of the family Tripterygiidae. Native range: Western Pacific, Japan, Ryukyu Islands, Taiwan, Hong Kong, Philippines, Viet Nam, Thailand, Malaysia, Indonesia, and Vanuatu. Species factsScientific nameHelcogramma fuscipectorisFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.2Depth range0–5 m (0–16 ft)EnvironmentMarine; demersal; depth range 0 - 5 mClimateSubtropicalDistributionWestern Pacific: Japan, Ryukyu Islands, Taiwan, Hong Kong, Philippines, Viet Nam, Thailand, Malaysia, Indonesia, and Vanuatu.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