HomeFish encyclopediaRay-finned fishesPerch-like fishCombtooth blenniesSea blenny Sea blenny (Entomacrodus thalassinus) Scientific name: Entomacrodus thalassinus Jordan & Seale, 1906 The Sea blenny (Entomacrodus thalassinus) is a marine fish of the family Blenniidae. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 13-15; Anal spines: 2; Anal soft rays: 15 - 17Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEntomacrodus thalassinusFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.0EnvironmentMarine; reef-associatedClimateTropicalDistributionIndo-Pacific: disjunct distribution; Seychelles and Maldives in the Indian Ocean; then from southern Japan and Taiwan to the Line and Tuamotu Archipelago. The valid subspecies Entomacrodus thalassinus longicirrus ranges from Gulf of Thailand to Hong Kong.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