The blackback flounder, also known as the smooth flounder or winter flounder, is a type of flatfish that is commonly found in the Atlantic Ocean and the North Sea. It is known for its distinctive black back and its ability to blend in with the sandy ocean floor. Other synonyms for this fish include the yellowtail flounder, lemon sole, and dab. Despite its plain appearance, the blackback flounder is a prized food fish and is often used in seafood dishes around the world. Whether you know it as a blackback flounder or a lemon sole, this fish is a flavorful addition to any meal.