Betta generally refers to various combative species among fish-Perciformes-Perciformes-Perciformes males, including Siamese Betta (native to Thailand), Forked Betta (native to southern China) and Round-tailed Betta (native to northern China).

Broadly speaking, Perciformes is the general name of all small tropical fishes of Anabaena. In a narrow sense, it refers to the small tropical fish of the fighting family of Perciformes; Also refers to Siam fighting fish and its bell. Similar to other fish, it mainly breathes through gills, but it also has another auxiliary respiratory organ-gill fan, which is named after it in English. The gill fan is located in the cavity above the gill, and the cavity is covered with blood vessels. Air is sucked into the cavity through the mouth, and betta fish can survive in water with low oxygen content by oxygen in the air. Bettas live only in freshwater habitats in Asia and Africa. Most species of male fish build, protect and maintain a floating nest composed of mucus foam, which is often called nesting fish. There are about 70 kinds of fighting fish, many of which are often kept in family aquariums, and most of them are precious ornamental fish. All kinds of betta can be classified into Pseudobetta, or into five families, such as Puffer, Bass, Small Betta, Small Betta and Small Betta.