| Main Ref. | Russell, B.C., 1990 |
| Appearance refers to | Male; Female |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | males alike females |
| Different colors | males alike females |
| Remarks |
| Striking features | none |
| Body shape lateral | fusiform / normal |
| Cross section | oval |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Diagnosis |
Head scales reaching forward to or just in front of level of anterior nostrils. Scaled area between nostrils with a distinct naked wedge-shaped notch. Suborbital naked. Lower limb of preopercle naked. Pelvic fins moderately long, reaching to or just before level of anus. Lobes of caudal fin more or less equal in length. Color: Body silvery-white. |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 45 - 50 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 2.5 - 6 |
| Scale rows below lateral line | 11 - 20 |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | absent |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 7 - 15 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 10 - 10 |
| Soft-rays total | 9 - 9 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 3 - 3 |
| Soft-rays total | 7 - 7 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 16 - 17 | |
| Pelvics | Attributes more or less normal |
| Position thoracic behind origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |