HomeFish encyclopediaRay-finned fishesPerch-like fishPike-, tube- and flagblenniesClubhead blenny Clubhead blenny (Acanthemblemaria balanorum) Scientific name: Acanthemblemaria balanorum Brock, 1940 The Clubhead blenny (Acanthemblemaria balanorum) is a marine fish of the family Chaenopsidae. Native range: Eastern Central Pacific, Gulf of California. BiologyFound exclusively in empty barnacle shells on rocky reefs. Feeds on zooplankton. Oviparous. Eggs are attached to the walls of the parent's shelter and are brooded by the male parent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcanthemblemaria balanorumFamilyChaenopsidae (Pike-, tube- and flagblennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.2Depth range1–5 m (3–16 ft)EnvironmentMarine; reef-associated; depth range 1 - 5 mClimateTropicalDistributionEastern Central Pacific: Gulf of California.Conservation status (IUCN)Least Concern (LC)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