| Main Ref. | Poss, S.G. and G.D. Johnson, 1991 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Head extremely large, depressed. Body elongate, not compressed. Caudal fin damaged (rounded, without branched rays, 10 segmented rays and 4 unsegmented). Body scales absent, except for lateral line which are extremely long and tubular; first 3 touching each other. Its distinct, densely melanic spots on the head may be a transitory larval or juvenile character but cannot be verified until larger specimens are caught (Ref. 35981). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 6 - 6 |
| 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 | 5 - 5 |
| Vertebrae | |
| preanal | 9 - 9 |
| total | 21 - 21 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 6 - 6 |
| Soft-rays total | 6 - 6 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 2 - 2 |
| Soft-rays total | 4 - 4 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 15 - 15 | |
| Pelvics | Attributes |
| Position thoracic before origin of D1 | |
| Spines 1 | |
| Soft-rays 1 - 1 |