| Main Ref. | Katano, O. and H. Hakoyama, 1997 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | eel-like |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | scales embedded or partly/completely absent |
| Diagnosis |
Posterior nostril in front of upper half of eye, with a rather large flap; narrow patch of teeth in 2-3 regular series on pterygoids; a row of enlarged caniniform teeth medially on vomer, on both sides associated with 2-5 series of smaller caniniform teeth. Body short, but longer than in other Indo-Pacific species. Tail long and tapering. Other characteristics: dorsal fin rays 418; anal fin rays 301; lateral line pores 206. |
| 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 | 39 - 39 |
| total | 248 - 248 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | |
| Adipose fin | absent |
| Attributes | other (see remark); confluent |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total |
| Pectoral | Attributes absent |
| Spines 0 | |
| Soft-rays 0 - 0 | |
| Pelvics | Attributes suppressed/absent |
| Position | |
| Spines 0 | |
| Soft-rays 0 - 0 |