Chilean sea bass, also known as Patagonian toothfish, is a type of fish that is found in the southern waters of the Atlantic, Pacific, and Indian Oceans, including around the southern coast of South America, specifically in the waters around Chile and Argentina. It is a deep-water fish that can grow up to 7 feet in length and weigh over 200 pounds. This species of fish has a high-fat content, a rich flavor, and a delicate, flaky texture.