| Main Ref. | Fricke, R., 1994 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | males alike females |
| Different colors | males alike females |
| Remarks | Spawning females have a larger body depth and width than males of the same size. |
| Striking features | striking fins |
| Body shape lateral | fusiform / normal |
| Cross section | oval |
| Dorsal head profile | clearly concave |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Type of scales | ctenoid scales |
| Diagnosis |
With 17-22 soft anal fin rays, 17-25 lateral line scales, 35-42 +1 total lateral scale rows, and the body with an irregular or without a checker-board pattern, extending to level of belly. |
| Ease of Identification | easy to distinguish from other species. |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 17 - 25 |
| 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 | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | 3 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 18 - 21 |
| Soft-rays total | 10 - 15 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 2 - 2 |
| Soft-rays total | 17 - 22 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 15 - 18 | |
| Pelvics | Attributes more or less normal |
| Position jugular before origin of D1 | |
| Spines 1 | |
| Soft-rays 3 - 3 |