HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesBighead goby Bighead goby (Ponticola kessleri) Scientific name: Ponticola kessleri G?nther, 1861 The Bighead goby (Ponticola kessleri) is a freshwater fish of the family Gobiidae. In the aquarium it needs water at 4–20°C (39–68°F). Bighead goby care at a glanceTemperature4–20°C (39–68°F) BiologyThis species is distinguished from related species in the Black Sea basin by the following characters: 75-95 % of distance between its origin and anus; ctenoid scales completely cover predorsal area and nape; pelvic disc fraenum with angular lobes, fraenum length 1/6-1/2 of its width at base; scales in midlateral series 68-72 + 3-4; snout length 1.5-2.0 times in eye diameter; first branched ray of second dorsal about as long as penultimate ray; posterior part of first dorsal without black spot.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePonticola kessleriFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length22.0EnvironmentFreshwater; brackish; benthopelagicClimateTemperateDistributionEurope and Asia: Danube delta (Braila, Lake Brates); Lakes Kagul, Yalpukh, Katlabukh, Kitai. Dniester from the liman to the region of Kamentes-Podol'sk. Dnieper to Dnepropetrovsk; Odessa and all coasts of the Caspian Sea; and Volga at Astrakhan. Absent from the Sea of Azov.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026