| Main Ref. | Post, A., 1986 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Body black dorsally, silvery on sides (Ref. 6622). Branchiostegal rays: 7-8 (Ref. 36622). Body deep, heavy, sides straight. Large adults very dark brown (Ref. 37108). |
| 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 | 10 - 14 |
| on upper limb | 5 - 9 |
| total | 16 - 23 |
| Vertebrae | |
| preanal | |
| total | 27 - 29 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 1 - 1 |
| Soft-rays total | 25 - 29 |
| Adipose fin | absent |
| Attributes |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 18 - 24 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 17 - 20 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 6 - 6 |