The ridged-eye flounder (Pleuronichthys cornutus), also known as the frog flounder, is a species of flatfish in the family Pleuronectidae. It is a demersal fish that lives on sand and mud coastal bottoms at depths of between 2 and 170 metres (6.6 and 557.7 ft). Its native habitat is the temperate waters of the north-western Pacific, from southern Hokkaido to the Korean peninsula, the Bohai Sea, the Yellow Sea and the South China Sea. It can grow up to 30 centimetres (12 in) in length, and can weigh up to 1 kilogram (2.2 lb).^[1]

Ridged-eye flounder
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Pleuronectiformes
Family:	Pleuronectidae
Genus:	Pleuronichthys
Species:	P. cornutus
Binomial name
Pleuronichthys cornutus (Temminck & Schlegel, 1846)
Synonyms
Platessa cornuta Temminck & Schlegel, 1846 Pleuronectes cornutus (Temminck & Schlegel, 1846) Pleuronichthys lighti Wu, 1929