HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesHigh-hat Triplefin High-hat Triplefin (Enneapterygius tutuilae) Scientific name: Enneapterygius tutuilae Jordan & Seale, 1906 The High-hat Triplefin (Enneapterygius tutuilae) is a marine fish of the family Tripterygiidae. BiologyDorsal spines (total): 13 - 16; Anal spines: 1; Anal soft rays: 15 - 19. Identified by the tall first dorsal fin that is white in males. Large individuals may have conspicuous dark spot on upper middle of second dorsal fin connected to a band extending down the sides as well as about 5 darker bars on body and red snout and lower head.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEnneapterygius tutuilaeFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.0Depth range0–32 m (0–105 ft)EnvironmentMarine; reef-associated; depth range 0 - 32 mClimateTropicalDistributionIndo-West Pacific: Red Sea and East Africa to the Philippines and Taiwan, south to Papua New Guinea, Australia, then east to New Caledonia, Vanuatu, Fiji, the Solomon Islands, and American Samoa.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