| Main Ref. | McEachran, J.D. and J.D. Fechhelm, 1998 |
| 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 | clearly protrusible |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Body slender and elongate, color black; body depth 6.3-8.7% SL. Head length 13.3% SL. Lower jaw about equal to length of upper jaw and is not upturned at tip. Long, tapering, protrusible snout. Chin barbel long with a very long terminal bulb; 7.6-9.3% SL. Barbel with slender stem and an elongated terminal bulb with minute terminal filament. Bulb is 4.3-7% SL and 6 times longer than it is wide. Deep ventral groove absent. Pectoral fins free. Preorbital and suborbital luminous organs absent (Ref. 37039). |
| 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 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 20 - 25 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 35 - 37 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 2 - 2 | |
| Pelvics | Attributes |
| Position abdominal | |
| Spines | |
| Soft-rays 7 - 7 |