HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesRapa triplefin Rapa triplefin (Enneapterygius randalli) Scientific name: Enneapterygius randalli Fricke, 1997 The Rapa triplefin (Enneapterygius randalli) is a marine fish of the family Tripterygiidae. Native range: Eastern Central Pacific, Austral Islands, French Polynesia. BiologyFound in shallow depths, including intertidal pools.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEnneapterygius randalliFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.9Depth range0–27 m (0–89 ft)EnvironmentMarine; demersal; depth range 0 - 27 mClimateTropicalDistributionEastern Central Pacific: Austral Islands, French Polynesia.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