| Main Ref. | Nakamura, I., 1985 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | different morphology during breeding season only |
| Different colors | |
| Remarks | Females grow larger (Ref. 4770). |
| 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 |
Blue-black above, silvery white and splattered with brown on the sides, silvery white below; sometimes with more than 15 rows of obscure whitish stripes; 1st dorsal fin dark blue with black dots; 2nd dorsal fin dark blue; pectorals blackish brown, with tinges of silvery white in some specimens; pelvic fins blue-black with a black fin membrane; caudal fin blackish brown. |
| 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 | 0 - 0 |
| on upper limb | 0 - 0 |
| total | 0 - 0 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 43 - 52 |
| Adipose fin | absent |
| Attributes |
| Fins number | 2 |
| Spines total | 0 - 0 |
| Soft-rays total | 17 - 23 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 18 - 21 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 2 - 2 |