Rhodeus carpus is adaptable, suitable for living in the water temperature of 14-28 degrees Celsius, the water quality is not demanding, but also need to change the water diligently. Rhodeus is the carp order carp subfamily (Rhodeus subfamily) belongs to the common name of the fish, also known as four-square skin, mirror fish, color round children, for a group of small freshwater fish, is divided into Rhodeus genus (Rhodeus), quail genus guess (Acheilognathus), Tanaka Rhodeus genus (Tanakia). The body is ovoid or rhombic, the head is short, the mouth is small and whisker-paired or absent, the anal fin begins below the base of the dorsal fin, the dorsal and anal fins are quite long with or without spines, the ventral fin is ventral, the caudal fin is forked, and the lateral line scales are complete or incomplete. Reproductive females develop spawning tubes, and males produce marriage colors or bead stars. Rhodeus sinensis is an omnivorous fish that inhabits slow-moving or still waters and relies on freshwater mussels (genus Anodonta: Anodonta) for reproduction, with a small range of activity and a short lifespan. It is widely distributed in East and Southeast Asia and Europe.