| Main Ref. | Stresemann, E., 1974 |
| Appearance refers to | Male; Female |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | males alike females |
| Different colors | males alike females |
| Remarks |
| Striking features | flatfish |
| Body shape lateral | short and / or deep |
| 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 | superior |
| Diagnosis |
Flatfish, its disc width less than half its length (Ref. 3137). Small mouth (Ref. 3137, Ref. 51442). Eyes mostly (70%) on right side (Ref. 3137, 51442), 79% of dextrally oriented flounder (n = 1076) in Bos, 2000 (Ref. 57574). Rough skin, especially along the lateral line and the basis of the dorsal and anal fin (Ref. 3137). Lateral line straight, slightly rounded over pectorals (Ref. 3137). Green-olive colored (Ref. 51442), the bottom side white (Ref. 3137). Irregular reddish spots on the eye side (Ref. 35388). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 80 |
| 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) | absent |
| Gill rakers | |
| on lower limb | 7 - 13 |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | origin on head, nearly above eye |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 53 - 62 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 37 - 46 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 9 - 11 | |
| Pelvics | Attributes more or less normal |
| Position thoracic behind origin of D1 | |
| Spines 0 | |
| Soft-rays |