Source : WordNet®

flatfish
     n 1: sweet lean whitish flesh of any of numerous thin-bodied
          fish; usually served as thin fillets
     2: any of several families of fishes having flattened bodies
        that swim along the sea floor on one side of the body with
        both eyes on the upper side
     [also: {flatfishes} (pl)]

flatfishes
     See {flatfish}