| Main Ref. | Randall, J.E., G.R. Allen and R.C. Steene, 1990 |
| Appearance refers to | Male; Female |
| Bones in OsteoBase | Skull, Spine |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | compressed |
| 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 |
| Type of scales | cycloid scales |
| Diagnosis |
Color silvery, greenish above. Opercle with black spot. 20-37 weak scutes. Pectoral fins falcate. Scaleless breast to behind pelvic origin and laterally to pectoral base. Soft dorsal lobe falcate in young, becoming shorter than head in adults. First 2 anal spines detached. |
| 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 | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 15 - 18 |
| on upper limb | 5 - 9 |
| total | 20 - 27 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | other |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 9 - 9 |
| Soft-rays total | 18 - 20 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 3 - 3 |
| Soft-rays total | 14 - 17 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position thoracic before origin of D1 | |
| Spines | |
| Soft-rays |