HomeFish encyclopediaRay-finned fishesPerch-like fishCombtooth blenniesPortuguese blenny Portuguese blenny (Parablennius ruber) Scientific name: Parablennius ruber Valenciennes, 1836 The Portuguese blenny (Parablennius ruber) is a marine fish of the family Blenniidae. BiologyInhabits rocky shores. Solitary or in groups or 5 to 15. Oviparous. Eggs are demersal and adhesive.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParablennius ruberFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length14.1Depth range2–20 m (7–66 ft)EnvironmentMarine; demersal; depth range 2 - 20 m, usually 5 - ? mClimateSubtropicalDistributionEastern Atlantic: except for old citations, Parablennius ruber is only mentioned as being observed in Portuguese waters (mainland Portugal, Azores, and Madeira). This is probably due to the recent date of the revalidation of the species. An analysis of data from other populations that have been considered as Parablennius gattorugine is needed to establish the distribution of Parablennius ruber.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tm=1) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026