| Main Ref. | Costa, W.J.E.M., 2002 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | clearly concave |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Dorsal head profile of adult male strongly concave; lateral body stripes of male black; bright blue zone along the posterior margin of caudal fin of male; dark spots on the entire caudal fin of male; pectoral fin length of male 19.6-23.4% SL; longitudinal rows of spots on body of male light blue; pelvic fin length 6.3-7.2% SL in male and 6.4-7.4 in female; dark brown irregular marks on dorsum below dorsal fin of male; 15-17 supraorbital neuromasts and 1-3 neuromasts per scale of the lateral line (Ref. 42931). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | 26 - 28 |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 12 - 12 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 11 - 11 |
| Vertebrae | |
| preanal | |
| total | 28 - 29 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 17 - 20 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | |
| Spines total | 0 - 0 |
| Soft-rays total | 23 - 27 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 13 - 14 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 5 - 7 |