HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesBlacktail triplefin Blacktail triplefin (Enneapterygius nigricauda) Scientific name: Enneapterygius nigricauda Fricke, 1997 The Blacktail triplefin (Enneapterygius nigricauda) is a marine fish of the family Tripterygiidae. Species factsScientific nameEnneapterygius nigricaudaFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.9Depth range0–11 m (0–36 ft)EnvironmentMarine; demersal; depth range 0 - 11 mClimateTropicalDistributionWestern Central Pacific: Taiwan, Philippines, Vanuatu, Tonga, American Samoa, Society Islands, Kiribati, Jarvis Island, Howland Island, Wake Island, Marshall Islands, Micronesia, Guam, and Boni Islands (Japan).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries:ResilienceHigh, 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