| Main Ref. | Moser, H.G., 1996 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | light organs |
| 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 small; pelvic fins free of membranes (Ref. 6885). Body and head black; luminous organs attached to head reputed to be colored; barbel bulb pink; subocular red; postocular green (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 | 54 - 58 |
| Attributes | other |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 21 - 25 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 25 - 29 |
| Pectoral | Attributes rays very elongated |
| Spines 0 | |
| Soft-rays 4 - 8 | |
| Pelvics | Attributes other (see diagnosis) |
| Position abdominal before origin of D1 | |
| Spines 0 | |
| Soft-rays 6 - 7 |