| Main Ref. | Stein, D.L., N.V. Chernova and A.P. Andriashev, 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | none |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | |
| Position of mouth | sub-terminal/inferior |
| Type of scales | |
| Diagnosis |
Anterior dorsal rays shortened; caudal-fin rays 8; pectoral girdle with 4 radials, 2 with rudimentary notches; teeth small; chin pores one pore diameter apart, not in a pit but with anterior skin fold; gill opening ventral end slightly below level of lower margin of eye; pectoral without rudimentary rays; HL 19.9% SL, preanal 35% SL; body dark, peritoneum black, mouth black, tongue densely black-dotted (Ref. 42734). |
| 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 | 65 - 65 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 58 - 58 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | |
| Spines total | 0 - 0 |
| Soft-rays total | 53 - 53 |
| Pectoral | Attributes other (see remarks) |
| Spines | |
| Soft-rays 23 - 23 | |
| Pelvics | Attributes suppressed/absent |
| Position absent | |
| Spines 0 | |
| Soft-rays 0 - 0 |