| Main Ref. | Kottelat, M. and J. Freyhof, 2007 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Breeding males with fine, scattered tubercles on top and side of head (Ref. 59043) |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | sub-terminal/inferior |
| Type of scales | |
| Diagnosis |
Can be diagnosed from its congeners in Caspian Sea basin by having the following characters: 39-48 (usually 42-44) scales along the lateral line; body laterally compressed, depth 24-37% SL; dorsal fin usually with 9½ branched rays; anal fin usually with 10½ branched rays; mouth subterminal; snout rounded; iris silvery grey; pectoral pelvic and anal fins grey with dark margins (sometimes slightly red in autumn, outside spawning season); breeding males with fine, scattered tubercles on top and side of head (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 | |
| Spines | |
| Soft-rays |