Classification / Names
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Teleostei (teleosts) >
Cypriniformes (Carps) >
Cobitidae (Spined loaches)
Etymology: Cobitis: Greek, kobitis, -idos = a kind of sardine; also related with the voice Greek, kobios, Latin gobius = gudgeon (Ref. 45335); gladkovi: Named for N.A. Gladkov, who has worked for many years in the Zoological Museum of Moscow State University and made a considerable contribution to the taxonomy of spined loach of the genus Cobitis.
Eponymy: Professor Nikolay Alekseyevich Gladkov (1905–1975) was a Russian ornithologist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; benthopelagic. Temperate
Europe: basins of Volga, Don, Kuban and Eya, rivers of Bok'shoi and Malyi Uzen, and brackish bays of the northern Caspian Sea.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 8.8 cm TL male/unsexed; (Ref. 76903)
Short description
Identification keys | Morphology | Morphometrics
Can be diagnosed based on its karyotypic formula: 2n = 50 (8 m + 18 sm + 24 sta), NF =76 (Ref. 76903). Distinguished from other species of the genus Cobitis in the following set of characteristics diagnostic for the species Cobitis melanoleuca: Canestrini’s organ in males is narrow, bottle-shaped, its plate usually extends no far than to the end of the third segment of fin ray articulated with it; near the base of caudal fin there are two elongated dark spots often connected with each other; scales small, oval, with a large center not covered with transverse furrows and a small number of rings (less than ten, more often four to five) along the margin (Ref. 76903).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M., 2012. Conspectus cobitidum*: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). The Raffles Bulletin of Zoology, Suppl. (26):1-199. (Ref. 92804)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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