Carassius carassius, commonly known as the crucian carp, is a freshwater fish species that belongs to the Cyprinidae family. While the scientific name for this fish is Carassius carassius, it is also known by several other names. Some of the synonyms for this fish include Carasius vulgaris, Cyprinus carassius, and Carassius auratus. In some regions of the world, it is also called the common carp or the European carp. The crucian carp is a popular game fish and is often raised in aquaculture systems for food production. It is prized for its delicate flavor and firm texture, making it a popular choice among chefs and seafood lovers alike.