| Main Ref. | Heemstra, P.C. and N.V. Parin, 1986 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | striking fins |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Body dark, iridescent blue above, silvery white below; pectorals and caudal fin greyish, other fins not pigmented (Ref. 2797). Juveniles with or without black bars (Ref. 2797). Branchiostegal rays: 9-11 (Ref. 36606). |
| 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 | 22 - 24 |
| on upper limb | 7 - 8 |
| total | 20 - 37 |
| Vertebrae | |
| preanal | |
| total | 43 - 46 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 12 - 15 |
| Adipose fin | absent |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 12 - 14 |
| Pectoral | Attributes transformed to 'aerofoils' |
| Spines 0 | |
| Soft-rays 14 - 16 | |
| Pelvics | Attributes other (see diagnosis) |
| Position abdominal before origin of D1 | |
| Spines 0 | |
| Soft-rays 6 - 6 |