HomeMarine aquarium fishGobies, blennies & dottybacksRed-mouthed goby Red-mouthed goby (Gobius cruentatus) Scientific name: Gobius cruentatus Gmelin, 1789 The Red-mouthed goby (Gobius cruentatus) is a marine fish of the family Gobiidae. Native range: Eastern Atlantic, southwest Ireland to Morocco, Mediterranean and Senegal. BiologyFound inshore, on rocks, sand and sea-grass meadows.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGobius cruentatusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length18.0Depth range15–40 m (49–131 ft)EnvironmentMarine; demersal; oceanodromous; depth range 15 - 40 mClimateSubtropicalDistributionEastern Atlantic: southwest Ireland to Morocco, Mediterranean and Senegal.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 aurifronsBlack-faced blennyTripterygion delaisiYellow-eyed comb-toothEcsenius melarchusSee 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