Pleuronectidae

Ridged-eye flounder

Pleuronichthys cornutus

Hornlike ridges framing eyes over northwest Pacific sands

• Temperate
• Offshore
• Northern Hemisphere
• Regional distribution
• Marine fish
• Pacific Ocean
• East Asia
• Medium
• Temperate fish

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.