| Main Ref. | Keith, P. and J. Allardi (coords.), 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Diagnosed from congeners in Europe by the possession of the following characters: origin of anal fin below branched dorsal rays 4-5; lateral line with 45-48 + 3 scales; anal fin with 17-20½ branched rays; 16-22 gill rakers; ventral keel exposed from anus to pelvic base; lateral stripe absent in life, faint or absent in preserved specimens; and mouth slightly superior (Ref. 59043). Caudal fin with 19 rays (Ref. 2196). Also Ref. 40476. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 48 - 55 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 7 - 9 |
| Scale rows below lateral line | 3 - 4 |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 16 - 23 |
| Vertebrae | |
| preanal | |
| total | 41 - 44 |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 2 - 4 |
| Soft-rays total | 7 - 9 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 3 - 3 |
| Soft-rays total | 14 - 20 |
| Pectoral | Attributes more or less normal |
| Spines 1 | |
| Soft-rays 14 - 18 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines 2 | |
| Soft-rays 7 - 8 |