| Main Ref. | Almada, V.C., F. Almada, M. Henriques, R.S. Santos and A. Brito, 2002 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Modal count of rays on dorsal fin 26 and anal fin 14; scales on lateral line 33-34; dark blue coloration of the males during spawning season (Ref. 35939). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 33 - 34 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 4 - 5 |
| Scale rows below lateral line | 9 - 11 |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 13 - 15 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 17 - 18 |
| Soft-rays total | 8 - 9 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | |
| Spines total | 5 - 6 |
| Soft-rays total | 7 - 9 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 14 - 15 | |
| Pelvics | Attributes |
| Position behind origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |