Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cobitidae
(Loaches) > Cobitinae
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.
Environment / Climate / Range
Freshwater; brackish; demersal. Temperate, preferred ?
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)
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).
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. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00217 - 0.01155), b=3.13 (2.95 - 3.31), based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (21 of 100) .