HomeFreshwater aquarium fishOther freshwater fishBay blenny Bay blenny (Hypsoblennius gentilis) Scientific name: Hypsoblennius gentilis Girard, 1854 The Bay blenny (Hypsoblennius gentilis) is a brackish-water fish of the family Blenniidae. Native range: Eastern Central Pacific, Monterey Bay, California, USA to Bahia Magdalena (Baja California Sur, Mexico) and the Gulf of California. BiologyFound in intertidal shallows. Territorial. Feeds on small benthic invertebrates and algae. Demersal spawners in nearshore habitats. Oviparous. Eggs are demersal and adhesive, and are attached to the walls of the parent's shelter. Eggs are brooded by the male parent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHypsoblennius gentilisFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range25 m (82 ft)EnvironmentMarine; brackish; demersal; depth range ? - 25 mClimateSubtropicalDistributionEastern Central Pacific: Monterey Bay, California, USA to Bahia Magdalena (Baja California Sur, Mexico) and the Gulf of California.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (tmax=6.5) More other freshwater fishPumpkinseedLepomis gibbosusLined soleAchirus lineatusShort-tailed pipefishMicrophis brachyurus brachyurusFinescale tigerfishDatnioides microlepisFreshwater garfishXenentodon cancilaSouth American lungfishLepidosiren paradoxaSee all other freshwater fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026