HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesIzu Islands triplefin Izu Islands triplefin (Enneapterygius miyakensis) Scientific name: Enneapterygius miyakensis Fricke, 1987 The Izu Islands triplefin (Enneapterygius miyakensis) is a marine fish of the family Tripterygiidae. Native range: Northwest Pacific, Japan. Species factsScientific nameEnneapterygius miyakensisFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.5Depth range0–1 m (0–3 ft)EnvironmentMarine; demersal; depth range 0 - 1 mClimateTemperateDistributionNorthwest Pacific: Japan.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