The southern flounder is thought to be the largest Gulf of Mexico flatfish. A member of the Bothidae family of left-eyed flounder, it is a highly desired food ﬁsh, and considerable numbers are harvested by trawlers.
IdentificationThe southern flounder resembles the summer flounder in appearance. Its coloring is light to dark olive-brown, and it is marked with diffused dark blotches and spots, instead of distinct ocelli (spots ringed with distinct lighter areas). These spots often disappear in large ﬁsh.
The underside is white, the simple fins make an even fringe around the body, and its beady eyes are located extremely close together. It can be distinguished from the summer flounder by having fewer gill rakers and by the presence of distinct spots. It is also similar to the gulf flounder, which has no distinct ocelli.