The Anabantoidei is a suborder of perciform ray-finned freshwater fishes distinguished by their possession of a lung-like labyrinth organ, which enables them to breathe air. The fishes in the Anabantoidei suborder are known as anabantoids or labyrinth fishes. Some labyrinth fishes are important food fish and many others, such as the Siamese fighting fish and paradise fish, are popular as aquarium fishes.