| Main Ref. | Page, L., 1983 |
| Appearance refers to | Male; Female |
| Bones in OsteoBase |
| Specialized organs | other |
| Different appearance | always different morphology between mature adults |
| Different colors | |
| Remarks | Male: first dorsal and anal fins are darker. Breeding tubercles develop on the anal and pelvic rays. Black and red bands in the first dorsal fin intensify. The pelvic fins have expansive lateral flaps. Female: the bilobed genital papilla is swollen and much larger than the small flap-like papilla of the male. |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis | |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 31 - 37 |
| Pored lateral line scales | 0 - 6 |
| Scales in lateral series | 9 - 12 |
| Scale rows above lateral line | 3 - 5 |
| Scale rows below lateral line | 5 - 7 |
| Scales around caudal peduncle | 14 - 17 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 32 - 33 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 6 - 8 |
| Soft-rays total | 10 - 13 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 5 - 8 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 8 - 11 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |