Anabantiformes is an order of fish that includes species known for their ability to breathe air. This group primarily consists of the families Anabantidae, which includes the popular betta fish, and Osphronemidae. These fish possess a specialized organ called the labyrinth organ, allowing them to extract oxygen from the air, which is particularly useful in low-oxygen environments. Members of Anabantiformes are often found in freshwater habitats such as swamps, ponds, and rice paddies. They are known for their unique behaviors, including bubble-nesting and territorial displays. Many species are popular in the aquarium trade due to their vibrant colors and interesting behaviors.