| Main Ref. | Randall, J.E., 1980 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | none |
| Body shape lateral | fusiform / normal |
| Cross section | compressed |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Type of scales | cycloid scales |
| Diagnosis |
Usually bright green in algae habitat, but pale or with longitudinal dark bands on plain rubble (Ref. 48636). Head of male with intricate reticulate pattern of bands that varies from one individual to another; small blackish spot on anus. Juveniles and females with dark dots dorsally and posteriorly; these are lost in males. Anterior lateral line scales with 1-3 pores; 8-13 suborbital pores. Anterior dorsal and anal soft rays longer than posterior rays; male pelvic fins not reaching the anus. |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 28 - 28 |
| Pored lateral line scales | 28 - 28 |
| 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 - 20 |
| Vertebrae | |
| preanal | |
| total | 25 - 25 |
| Attributes | extending over most of the back length |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 9 - 9 |
| Soft-rays total | 10 - 11 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 3 - 3 |
| Soft-rays total | 10 - 11 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 13 - 15 | |
| Pelvics | Attributes more or less normal |
| Position thoracic behind origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |