Melanogrammus aeglefinus, also known as haddock, is a popular saltwater fish commonly used in cooking and enjoyed worldwide. There are several synonyms for this species, including Melanogramma aeglefinus, Gadus aeglefinus, and Smaris aeglefinus. Haddock belongs to the Gadidae family, which also includes cod and pollock. This fish has a flaky, white meat with a mild flavor that works well in a variety of dishes. It is often used to make fish and chips, fish cakes, or added to chowders and stews. Haddock is a versatile fish that is popular in many parts of the world, making it a popular and well-known species among seafood enthusiasts.