| Main Ref. | Saruwatari, T., J.A. López and T.W. Pietsch, 1997 |
| 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 |
Vomer T-shaped with well-developed posterior process; periphery of glossohyal bone with single row of conical teeth, central part toothless; gill rakers 10(7-11) + 23(20-25) = 32(29-36); pyloric caeca 4(1-6); base of adipose fin less then 20% of head length; eye large; adipose eyelid absent. |
| Ease of Identification | difficult to identify using external characters only. |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 54 - 60 |
| 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 | 7 - 11 |
| on upper limb | 20 - 25 |
| total | 29 - 36 |
| Vertebrae | |
| preanal | 33 - 37 |
| total | 53 - 57 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 8 - 10 |
| Adipose fin | present |
| Attributes | forked |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 12 - 19 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 11 - 19 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines 0 | |
| Soft-rays 7 - 9 |