Cowfish refers to a unique and eye-catching fish species found in the ocean. Commonly known as the horned boxfish, the cowfish gets its name from its peculiar appearance, resembling a cow wearing a helmet. It belongs to the family of Tetraodontidae and is also known as Lactoria cornuta. Some other synonyms for cowfish could include helmet fish, jack in the box fish, balloonfish, and trunkfish. These names are given to the cowfish because of its boxy shape, inflated body, and horn-like protrusions on its head. Despite its unusual appearance, the cowfish is a fascinating and popular aquarium fish among hobbyists due to its vibrant colors and playful personality.