| Main Ref. | Nakamura, I., 1985 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosi |
Blue-black above, silvery white splattered with brown on the sides, silvery white below; dorsal fins dark blue; pectorals blackish brown, occasionally with tinges of greyish white; pelvic fins blue-black with a black fin membrane; 1st anal fin dark blue with silvery white at base; 2nd anal fin blackish brown. |
| Ease of Identification |
| Lateral Lines | 1 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 | 0 - 0 |
| on upper limb | 0 - 0 |
| totale | 0 - 0 |
| Vertebre | |
| preanal | 12 - 12 |
| totale | 24 - 24 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 50 - 57 |
| Adipose fin |
| Attributes |
| Fins number | 2 |
| Spines total | 0 - 0 |
| Soft-rays total | 18 - 21 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 18 - 21 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 2 - 2 |