| Main Ref. | Smith, C.L., 1997 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Profile from snout to origin of first dorsal spine nearly straight (Ref. 26938). No enlarged spines on caudal peduncle, but males with an elongate patch of bristle-like spinules (Ref. 13442). |
| 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 | 22 - 31 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | other |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 2 - 2 |
| Soft-rays total | 27 - 29 |
| Adipose fin |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 27 - 29 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 11 - 13 | |
| Pelvics | Attributes suppressed/absent |
| Position | |
| Spines | |
| Soft-rays |