HomeFish encyclopediaRay-finned fishesPerch-like fishPike-, tube- and flagblenniesMalpelo barnacle blenny Malpelo barnacle blenny (Acanthemblemaria stephensi) Scientific name: Acanthemblemaria stephensi Rosenblatt & McCosker, 1988 The Malpelo barnacle blenny (Acanthemblemaria stephensi) is a marine fish of the family Chaenopsidae. Native range: Eastern Pacific, known only from Malpelo Island. BiologyInhabits empty barnacles and worm or mollusk tubes on rocky reefs. Feeds on zooplankton.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcanthemblemaria stephensiFamilyChaenopsidae (Pike-, tube- and flagblennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.0Depth range9–10 m (30–33 ft)EnvironmentMarine; reef-associated; depth range 9 - 10 mClimateTropicalDistributionEastern Pacific: known only from Malpelo Island.Conservation status (IUCN)Vulnerable (VU) (B1ab(iii);D2)Threat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026