| Main Ref. | Myers, R.F., 1991 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | striking eyes |
| Body shape lateral | elongated |
| Cross section | oval |
| Dorsal head profile | more or less straight |
| Type of eyes | positioned on stalks, very prominent, or tubular |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Type of scales | ctenoid scales |
| Diagnosis |
A row of small blackish spots in outer third of anal fin (Ref 42740). Males develop a conspicuous ocellus on each side of the nape (Ref. 1602). Young are best identified by the patch of small spots on the cheek that usually remains evident in adults (Ref. 48636). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 57 - 60 |
| 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 | |
| on upper limb | |
| total | 17 - 19 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | extending over most of the back length |
| Fins number | 1notched No |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 4 - 5 |
| Soft-rays total | 20 - 21 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 17 - 17 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 17 - 18 | |
| Pelvics | Attributes more or less normal |
| Position thoracic before origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |