Barbatula nuda (Bleeker, 1864)
Barbatula nuda
photo by Kim, I.-S.

Family:  Nemacheilidae ()
Max. size:  22 cm TL (male/unsexed)
Environment:  demersal
Distribution:  Asia: China, Korea and Japan.
Diagnosis:  Dorsal soft rays (total): 10-10; Anal soft rays: 8-8; Vertebrae: 40-42. Distinguished from all other species of Barbatula from northern Asia by having an upper lip with a marked and deep median indention (vs. slight and shallow) and a nearly scaleless body or scales only on the caudal-fin base (vs. body scaled posterior to the dorsal-fin origin or a fully scaled body). Can be further diagnosed from B. dgebuadzei in having closely-set nostrils (vs. widely separated) and 40-42 vertebrae (vs. 43-45). Similar to both Barbatula altayensis and B. sawadai in the shared presence of closely-set nostrils, a character distinguishing them from all other congeners from northern Asia with widely separated nostrils. Can be further diagnosed from B. altayensis in having 40-42 vertebrae (vs. 44-45), and from B. sawadai in having 7 branched dorsal-fin rays (vs. 8). Resembles B. compressirostrisi (or B. golubtsovii) and B. dgebuadzei in scalation in that the body is scaleless or scales only on the caudal-fin base. Further differs from B. compressirostrisi (or B. golubtsovii) in having 40-42 vertebrae (vs. 45-47) and closely-set nostril (vs. widely separated) (Ref. 93050).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Garilao, Cristina V. - 06.01.03
Modified by: Bailly, Nicolas - 31.10.12

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