Teleostei (teleosts) >
Perciformes/Cottoidei (Sculpins) >
Cottidae (Sculpins)
Etymology: Radulinopsis: Latin, radula, radere = to scrape (1877) (Ref. 45335).
Eponymy: Aleksandr Nikolayeviç Derjavin (Derzhavin) (1878–1963) was a Russian biologist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 20 m (Ref. 58496). Temperate
Northwest Pacific: Russian Federation and northern Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm 4.0 range ? - ? cm
Max length : 7.0 cm TL male/unsexed; (Ref. 56557)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 9 - 11; Dorsal soft rays (total): 13 - 15; Anal spines: 0; Anal soft rays: 13 - 14; Vertebrae: 31 - 33. Head and body above lateral line almost completely covered with small serrated scales; teeth absent on prevomer; length of anal fin base 28%-32% SL; length of caudal peduncle 15%-17% SL (Ref. 45347).
Found over sandy bottoms (Ref. 45347). Maximum depth reported at 24 m (Ref. 45347).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998. A list of fishes of Peter the Great Bay (the Sea of Japan). J. Ichthyol. 38(1):1-11. (Ref. 27683)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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