Pseudopleuronectes Americanus is commonly known as the winter flounder or blackback flounder and is a species of flatfish that is found in the western Atlantic Ocean. Winter flounder is a marine fish that inhabits shallow waters and sandy bottoms along the eastern coast of North America. Other synonyms for Pseudopleuronectes Americanus include Glyptocephalus Americanus, Pleuronectes Americanus, and Rhombus Americanus. The winter flounder is an important commercial and recreational species, with its firm, delicate, and mild-flavored meat being used in many dishes. Winter flounder is also an important species for sports fishing, with its size reaching up to 4 pounds and its unique diamond-shaped body being a popular catch for anglers.