| Main Ref. | Parin, N.V., 1984 |
| 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 | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
No chin barbel; very small round light organ on abdomen in front of the center of the distance between the end of the base of the pelvic fins and the anus; pyloric caeca 9-12; body cavity extending to level of 13-14th ray of the anal fin. Caudal fin rounded. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 106 - 116 |
| 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 | 19 - 20 |
| Vertebrae | |
| preanal | |
| total | 56 - 57 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 74 - 78 |
| Adipose fin | absent |
| Attributes | other (see remark); more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 71 - 75 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 26 - 27 | |
| Pelvics | Attributes more or less normal |
| Position thoracic | |
| Spines 0 | |
| Soft-rays 5 - 6 |