HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesRedtail triplefin Redtail triplefin (Enneapterygius rubicauda) Scientific name: Enneapterygius rubicauda Shen, 1994 The Redtail triplefin (Enneapterygius rubicauda) is a marine fish of the family Tripterygiidae. Native range: Western Pacific, Ryukyu and Ogasawara islands, Taiwan, Philippines, New Caledonia, and Vanuatu. Species factsScientific nameEnneapterygius rubicaudaFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.7Depth range0–7 m (0–23 ft)EnvironmentMarine; demersal; depth range 0 - 7 mClimateSubtropicalDistributionWestern Pacific: Ryukyu and Ogasawara islands, Taiwan, Philippines, New Caledonia, 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