Flounder has nutrition. According to the query related public information shows that flounder is the general name of flounder fish. It has no swim bladder and feeds on worms, crustaceans and other animals. Flounder aliases: piece of mouth fish, left mouth fish, tooth piece, partial mouth, flounder flounder, also known as plaice, inhabits the sandy seabed of the shallow sea, preying on small fish and shrimp.