HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesYellow-and-black triplefin Yellow-and-black triplefin (Forsterygion flavonigrum) Scientific name: Forsterygion flavonigrum Fricke & Roberts, 1994 The Yellow-and-black triplefin (Forsterygion flavonigrum) is a marine fish of the family Tripterygiidae. Native range: Southwest Pacific, New Zealand. BiologyFound on the sides or under overhangs of large boulders, sheltering in the massive sponge growths or in large, deep crevices. Feeds mainly on amphipods, and also on barnacle cyprids and polychaete larvae. Males maybe territorial during the breeding season.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameForsterygion flavonigrumFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.0Depth range4–110 m (13–361 ft)EnvironmentMarine; demersal; depth range 4 - 110 m, usually 4 - 20 mClimateTemperateDistributionSouthwest Pacific: New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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