| Main Ref. | Randall, J.E., 1972 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | always different morphology between mature adults |
| 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 |
Ground color of female very dark brown; orangish on front of head and lower parts; body spotted with white or very pale yellow, extending to dorsal and anal fins; caudal bright cadmium. Male form deep violet; irregular blue spots on cheeks and lower operculum; body with round blue spots becoming oblong, nearly forming longitudinal bands ventrally; dorsal and anal fins with longitudinal bands; caudal with numerous blue ocelli. Dorsal spines flexible. Caudal fin of adults truncate to emarginate; rounded in small juveniles. Easily confused with male A. geographicus when seen underwater, except when displaying with iridescent blue-green lines and spots over the body and fins (Ref. 48636). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 26 - 26 |
| Pored lateral line scales | 26 - 26 |
| 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 | 18 - 20 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | first rays forming locking device |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 9 - 9 |
| Soft-rays total | 11 - 13 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 3 - 3 |
| Soft-rays total | 11 - 13 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 12 - 14 | |
| Pelvics | Attributes more or less normal |
| Position thoracic behind origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |