| Main Ref. | Hart, J.L., 1973 |
| 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 |
Caudal fin very narrow and pointed; pectorals long and narrow; outer rays of pelvic fins elongated (Ref. 6885). Dark brownish on posterior part of body and fins, not observed anteriorly; black on lower jaw, mouth, gill cavities and peritoneum (Ref. 6885). |
| 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 | |
| Vertebrae | |
| preanal | |
| total | 84 - 84 |
| Attributes | extending over most of the back length |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 2 - 2 |
| Soft-rays total | 123 - 123 |
| Adipose fin | absent |
| Attributes | pointed |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 113 - 113 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 20 | |
| Pelvics | Attributes rays very elongated |
| Position thoracic beneath origin of D1 | |
| Spines 0 | |
| Soft-rays 10 - 10 |