| Main Ref. | Reshetnikov, Y.S., 2003 |
| Appearance refers to | Male; Female |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | always different morphology between mature adults |
| Different colors | |
| Remarks | Males are smaller than females (Ref. 59043). |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Presence of two black spots on caudal base, lower one sometimes weak (Ref. 59043). |
| Ease of Identification | likely to be confused with closely related species. |
| 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 | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 2 - 3 |
| Soft-rays total | 6 - 7 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 2 - 3 |
| Soft-rays total | 5 - 6 |
| Pectoral | Attributes more or less normal |
| Spines 1 | |
| Soft-rays 7 - 8 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 6 |