HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesWestern Australian black-head triplefin Western Australian black-head triplefin (Enneapterygius larsonae) Scientific name: Enneapterygius larsonae Fricke, 1994 The Western Australian black-head triplefin (Enneapterygius larsonae) is a marine fish of the family Tripterygiidae. Native range: Southwest Pacific, Papua New Guinea and Australia. BiologyOccurs at shallow depths, often seen associated with coralline rocks, seagrass or algae.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEnneapterygius larsonaeFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.5Depth range0–12 m (0–39 ft)EnvironmentMarine; demersal; non-migratory; depth range 0 - 12 mClimateTropicalDistributionSouthwest Pacific: Papua New Guinea and Australia.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