HomeFreshwater aquarium fishPuffers, gobies & brackish fishRock goby Rock goby (Gobius paganellus) Scientific name: Gobius paganellus Linnaeus, 1758 The Rock goby (Gobius paganellus) is a freshwater fish of the family Gobiidae. In the aquarium it needs water at 8–24°C (46–75°F). Rock goby care at a glanceTemperature8–24°C (46–75°F) BiologyPredominantly marine, but may enter freshwater. Adults occur inshore in intertidal waters, under stones and in pools on sheltered rocky shores with much weed cover. They feed on crustaceans (larger amphipods, isopods, small crabs) and polychaetes; juveniles eat harpacticoid copepods, amphipods, polychaetes and mites. Oviparous. Fusiform shaped eggs are found in patches of several thousand on undersurface of stones, shells, polychaete tubes or Ciona mantles.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGobius paganellusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range0–15 m (0–49 ft)EnvironmentMarine; freshwater; brackish; demersal; amphidromous; depth range 0 - 15 mClimateSubtropicalDistributionEastern Atlantic: western Scotland to Senegal. Also known from the Mediterranean and Black Sea. Indian Ocean: as lessepsian migrant in the Gulf of Eilat and Red Sea. Records from Pointe Noire and vicinity might be doubtful.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: public aquariumsResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.41; tm=0-3; tmax=10; Fec=1,054) More puffers, gobies & brackish fishBanded archerfishToxotes jaculatrixSilver moonyMonodactylus argenteusRhinogobius duospilusGlobe fishTetraodon lineatusAmazon pufferColomesus asellusSpotted scatScatophagus argusSee all puffers, gobies & brackish fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026