In the next year, there will be betta and betta in addition to the newly listed shrimp species in the flower, bird, fish and insect market outside Harbin Street, which mainly refer to small fish belonging to Perciformes, Perciformes, Siluridae and Betta subfamily, with a cuboid body and a flat side. The mouth is small and inclined upward. The dorsal fin and the anal fin are both long and opposite to each other. The first fin outside the ventral fin is elongated into a filament. There are blue spots on the trailing edge of fin cover. The body is reddish brown. The male fish is fierce and aggressive. Because of its beautiful body color, aggressiveness and mosquito control experts, it has long been kept as an ornamental fish.