| Main Ref. | Kottelat, M. and J. Freyhof, 2007 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
The following characters separate this species from its congeners in Black and Caspian Sea basins: breast naked between pectoral bases; 12-14 scale rows around the caudal peduncle; barbel reaching between middle of eye and posterior eye margin; interorbital area flat; snout length 0.9-1.2 times in postorbital distance; head length 26-32% SL; head depth 16-18% SL at nape, 46-53% HL at eye; body depth 22-25% SL; head width 16-19% SL, 59-69% HL; eye diameter 5-6% SL, 2.8-3.4 times in head depth, 1.3-1.8 times in interorbital distance (at 7-10 cm SL); caudal peduncle depth 36-44% HL; and midlateral blotches contrasted, with sharp edges (Ref. 59043). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | absent |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |