| Main Ref. | Collette, B.B., 1986 |
| 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 | |
| Diagnosis |
Body very elongate; lower jaw very prolonged; upper jaw short, triangular, and scaly; teeth present on vomer and tongue; dorsal fin with 22 to 25 rays; anal fin with 22 to 24 rays; pectoral fins long, with 8 or 9 rays; back iridescent blue green; belly silvery (Ref. 55763). Fins unpigmented (Ref. 4164). |
| 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 | 44 - 46 |
| total | 70 - 75 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 21 - 25 |
| Adipose fin | absent |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 20 - 25 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 8 - 8 | |
| Pelvics | Attributes |
| Position | |
| Spines 0 | |
| Soft-rays 6 - 6 |