| Main Ref. | Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | none |
| Body shape lateral | elongated |
| Cross section | oval |
| Dorsal head profile | clearly convex |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Type of scales | scales embedded or partly/completely absent |
| Diagnosis |
Caudal fin deeply concave. Lower jaw slightly longer than upper jaw. Chin barbel very small. No lateral line pores on head. Scales small and embedded, not overlapping. Brownish along the back with many fine points; the sides and belly silvery; the fins dusky with pale margins (Ref. 1371). |
| Ease of Identification |
| Lateral Lines | 1 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 | 1 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 37 - 46 |
| Vertebrae | |
| preanal | |
| total | 49 - 57 |
| Attributes | no striking attributes |
| Fins number | 3 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 42 - 57 |
| Adipose fin | absent |
| Attributes | other (see remark); more or less normal |
| Fins number | 2 |
| Spines total | 0 - 0 |
| Soft-rays total | 33 - 44 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 19 - 19 | |
| Pelvics | Attributes more or less normal |
| Position thoracic before origin of D1 | |
| Spines 0 | |
| Soft-rays 6 - 6 |