| Main Ref. | Zhang, E. and H.Z. Liu, 1995 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Naked belly-breast extending as far as its anus. Very short barbels, shorter than or equal to the eye diameter. Pectoral fins without elongated rays and not reaching origin of pelvic fin. Pelvic origin closer to anal origin than pectoral origin. Anus located midway the origins of pectoral and anal fins. |
| 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 | 12 - 12 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 6 - 9 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 7 - 7 |
| Adipose fin |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total | 6 - 6 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 10 - 12 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays 6 - 6 |