The common sole, also known as Dover sole or simply sole, is a flatfish species that belongs to the family Soleidae. It is found in the Eastern Atlantic Ocean and the Mediterranean Sea, and is a popular food fish in many countries. The name "sole" is sometimes used to refer to other flatfish species as well, including the lemon sole, plaice, and turbot. Some other synonyms for common sole include the black sole, the European sole, and the slipper sole. These fish share similar physical characteristics and are all prized for their delicate flavor and moist texture.