HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesHelen's Triplefin Helen's Triplefin (Ceratobregma helenae) Scientific name: Ceratobregma helenae Holleman, 1987 The Helen's Triplefin (Ceratobregma helenae) is a marine fish of the family Tripterygiidae. Native range: Pacific Ocean, Christmas Island in the eastern Indian Ocean; Taiwan to southwestern and southeastern Australia and American Samoa. BiologyDorsal spines (total): 18 - 20; Dorsal soft rays (total): 9-10; Anal spines: 2; Anal soft rays: 19 - 21. Has a reddish head with rose blotches and an olive green body with irregular light streaks and blotches.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCeratobregma helenaeFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.2Depth range0–40 m (0–131 ft)EnvironmentMarine; reef-associated; depth range 0 - 40 mClimateTropicalDistributionPacific Ocean: Christmas Island in the eastern Indian Ocean; Taiwan to southwestern and southeastern Australia 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