| 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 | |
| Cross section | |
| Dorsal head profile | more or less straight |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Distinguished from its congeners in Europe by the combination of the following characters: 37-40 scales along lateral line; anal fin with 9½ branched rays; 11-14 gill rakers; dorsal head profile straight, snout pointing forward, tip above level of middle eye; back not humped behind nape; eye not close to dorsal head profile when viewed laterally; head length 29-31% SL; articulation of lower jaw below or in front of anterior margin of eye; ventral head profile with a conspicuous angle at articulation of lower jaw; and all fins dark grey in adults (Ref. 59043). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 37 - 40 |
| 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 | 11 - 14 |
| 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 before origin of D1 | |
| Spines | |
| Soft-rays |