Main Ref. | Nakamura, I. and N.V. Parin, 1993 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | striking shape of body |
Body shape lateral | eel-like |
Cross section | compressed |
Dorsal head profile | more or less straight |
Type of eyes | more or less normal |
Type of mouth/snout | more or less normal |
Position of mouth | superior |
Type of scales | scales embedded or partly/completely absent |
Diagnosis |
Body is extremely elongated, with body depth 10.8 to 13.4 times in SL. The snout is large with strong fang-like teeth. Pelvic fins represented by a single spine in juveniles but entirely absent in adults. Color is coppery black with iridescent tint. The inside of the mouth and gill cavities black. |
Ease of Identification |
Lateral Lines | 1 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 | 0 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total | 97 - 100 |
Attributes | extending over most of the back length |
Fins number | 1notched No |
Finlets No. | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Spines total | 34 - 41 |
Soft-rays total | 52 - 56 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | 2 - 2 |
Soft-rays total | 43 - 48 |
Pectoral | Attributes more or less normal |
Spines | |
Soft-rays | |
Pelvics | Attributes other (see diagnosis) |
Position thoracic beneath origin of D1 | |
Spines 1 | |
Soft-rays 0 - 0 |