| Main Ref. | Smith-Vaniz, W.F., 2003 |
| 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 |
Pelvic fins relatively short at all sizes, becoming nearly rudimentary (Ref. 51310). |
| 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 | 24 - 28 |
| on upper limb | 6 - 8 |
| total | 30 - 36 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 9 - 9 |
| Soft-rays total | 21 - 23 |
| Adipose fin |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | 3 - 3 |
| Soft-rays total | 17 - 19 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes other (see remarks) |
| Position | |
| Spines | |
| Soft-rays |