HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesCrested triplefin Crested triplefin (Trinorfolkia cristata) Scientific name: Trinorfolkia cristata Kuiter, 1986 The Crested triplefin (Trinorfolkia cristata) is a marine fish of the family Tripterygiidae. Native range: Eastern Indian Ocean, So far known only from South Australia. BiologyFound in the intertidal zone and on vertical rock surfaces and jetty pylons.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrinorfolkia cristataFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.2Depth range0–15 m (0–49 ft)EnvironmentMarine; demersal; depth range 0 - 15 mClimateSubtropicalDistributionEastern Indian Ocean: So far known only from South 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