HomeMarine aquarium fishGobies, blennies & dottybacksRockskipper Rockskipper (Entomacrodus marmoratus) Scientific name: Entomacrodus marmoratus Bennett, 1828 The Rockskipper (Entomacrodus marmoratus) is a marine fish of the family Blenniidae. Native range: Eastern Central Pacific, found only in the Hawaiian Islands. BiologyInhabit rocky shores exposed to surf; dwell in holes and crevices to escape heavy wave action. Benthic. Feed on algae, detritus and small invertebrates. Oviparous. Eggs are demersal and adhesive.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEntomacrodus marmoratusFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.2Depth range0–1 m (0–3 ft)EnvironmentMarine; demersal; depth range 0 - 1 mClimateTropicalDistributionEastern Central Pacific: found only in the Hawaiian Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More gobies, blennies & dottybacksPersian blennyEcsenius midasYellow prawn-gobyCryptocentrus cinctusFire gobyNemateleotris magnificaYellowhead jawfishOpistognathus aurifronsZebra blennyIstiblennius zebraEwa blennyPlagiotremus ewaensisSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026