| Main Ref. | Collette, B.B., 1974 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Very long upper jaw, very long pectoral fin, and relatively short lower jaw. Head longer than lower jaw; pectoral fin about as long as head. Sixth anal ray of males widened but not elongated beyond the rest of anal fin rays. None of the male dorsal rays elongated beyond the rest of the dorsal fin. |
| 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 | 11 - 14 |
| on upper limb | 4 - 5 |
| total | 16 - 18 |
| Vertebrae | |
| preanal | 30 - 32 |
| total | 46 - 46 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 0 - 0 |
| Soft-rays total | 12 - 13 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | 0 - 0 |
| Soft-rays total | 13 - 14 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 10 - 11 | |
| Pelvics | Attributes |
| Position | |
| Spines 0 | |
| Soft-rays |