| Main Ref. | Desoutter, M., 2003 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | flatfish |
| Body shape lateral | |
| Cross section | flattened |
| Dorsal head profile | clearly convex |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Diagnosis |
Diagnosis: flat and asymmetric body; both eyes on left side of body, except in reversed individuals; hind margin of preopercle free and visible with naked eye; dorsal and anal fins lacking spinous rays; dorsal fin originating above or before dorsal eye; caudal fin separate from dorsal and anal fins; single lateral line on eyed side, absent or camouflaged on blind side (Ref. 81290). Description: body depth 45-50% SL; HL comprised three times in SL; interorbital space narrow and slightly concave; hind end of maxilla extending to below centre of eye; body covered with cycloid or weakly ctenoid scales; gill rakers long and slender (Ref. 81290). Colouration: eyed side brown, with dark spots along dorsal and anal fins; white spot at base of caudal fin, as well as on upper and lower caudal-fin rays; dorsal and anal fins with series of dark spots; blind side entirely whitish (Ref. 81290). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 46 - 50 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 14 - 17 |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | extending over most of the back length |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 80 - 87 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 59 - 65 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |