HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsSnailfishesDeryugin's tadpole Deryugin's tadpole (Careproctus derjugini) Scientific name: Careproctus derjugini Chernova, 2005 The Deryugin's tadpole (Careproctus derjugini) is a marine fish of the family Liparidae. In the aquarium it needs water at 2°C (36°F). Native range: Arctic to Northeast Atlantic, Central Arctic basin to northeast of Spitzbergen. Deryugin's tadpole care at a glanceTemperature2°C (36°F) BiologyFound at depths with salinity 34.84 ppt.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCareproctus derjuginiFamilyLiparidae (Snailfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length21.7Depth range344–363 m (1129–1191 ft)EnvironmentMarine; bathydemersal; depth range 344 - 363 mClimateDeep-waterDistributionArctic to Northeast Atlantic: Central Arctic basin to northeast of Spitzbergen.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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