| Main Ref. | Wang, S. (ed.), 1998 |
| 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 | more or less normal |
| Type of mouth/snout | other (see remarks) |
| Position of mouth | sub-terminal/inferior |
| Type of scales | |
| Diagnosis |
Head large; snout conical; lips extremely thick and rolled upward; barbels 2 pairs. Last unbranched ray of dorsal fin strong and serrated on hind edge, with a forward declined spine at the front of dorsal fin; anal fin long, extending to base of caudal fin. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 44 - 50 |
| 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 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |