Paralichthys lethostigma, commonly known as the southern flounder, is a flatfish species found primarily in the western Atlantic Ocean. It typically inhabits coastal waters, estuaries, and sandy or muddy bottoms. This fish is characterized by its flattened body and both eyes located on one side, allowing it to blend into the ocean floor. Southern flounders are known for their ability to change color to match their surroundings, aiding in camouflage from predators. They are carnivorous, feeding on smaller fish and invertebrates. This species is also important for commercial and recreational fishing, contributing to local economies along the U.S. Gulf Coast.