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Rhodeus (Rhodeus), a small freshwater fish in the family Cyprinidae?subfamily Acheilognathinae

Rhodeus (Rhodeus) is a small freshwater fish with black spots on its dorsal fins. Juveniles generally have black spots on the dorsal fin, as shown in the figure

Small freshwater fish, adults up to about 6 cm; body ovoid or rhombic; head short, mouth small; whiskers 1 pair or none; anal fins begin below the base of the dorsal fins, dorsal and anal fins rather long, with or without hard spines; ventral fin ventral; caudal fin forked; lateral line scales complete or incomplete. Males are smaller and lower than females, with a beaded star on the muzzle and extended fin rays on the dorsal, anal, and pectoral fins. Reproductive marriages are brightly colored, with brilliantly shining longitudinal iridescent stripes on the sides of the body, the thickness and length of which indicate both sex and species-level characteristics. Females have spawning tubes, the length of which varies in different species. Therefore, it has an ornamental value.

The Rhodeus sinensis normally lives in still waters with lush aquatic plants and likes to swim in groups. Omnivorous, food for aquatic grasses, leaves of higher plants, algae, sedimentary organic matter, zooplankton, aquatic insects and branches and horns and so on. The age of sexual maturity of most species is 1 year, and the longest life span is 4-5 years. Spawning period in April-June, the most prevalent in mid-May, spawning in batches in the mussels.