The Family Cynoglossidae is a group of fishes commonly known as tonguefishes or tongue soles. These fishes are found in oceans around the world and have a distinctive body shape resembling a flattened tongue with both eyes on one side of their head. Other synonyms for the Family Cynoglossidae include halibut sole, sand dab, and flounder. Although they may have different names, these fishes share similar characteristics such as a small mouth, lack of teeth, and a bottom-dwelling lifestyle. Many of these fishes are of economic importance and are sought after by commercial fishermen for their delicate meat.