| Main Ref. | Kido, K., 1985 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Pectoral fin very shallowly notched; caudal fin round, broad, continuous with dorsal and anal for about two-thirds of its length without notches at union, its rays having free tips (Ref. 12700). Body gray, transparent; posterior margin of dorsal, anal and caudal fins dark (Ref. 12700). |
| 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 | 55 - 58 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 51 - 53 |
| Adipose fin | absent |
| Attributes | other (see remark); confluent |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 43 - 46 |
| Pectoral | Attributes very large , lobe-like |
| Spines 0 | |
| Soft-rays 33 - 36 | |
| Pelvics | Attributes part of sucker-disc |
| Position | |
| Spines 0 | |
| Soft-rays 0 - 0 |