Anodonta woodiana at different juvenile (1.5-month-old, 2.5-month-old and 6-month-old) stages. The results showed that Cyanophyta and Chlorophyta were the major components. The number of dietary algal species in the mussels tended to increase over the juvenile stages (i, e., 11 species at 1.5-month-old, 13 species at 2.5-month-old, and 37 species at 6-month-old). The dominant algal species in 1.5-month-old juveniles were Tetraëdro minimum, while those in 2.5-month-old juveniles were , could be found in < 0.05), reflecting a possibly high The aforementioned results provide important scientific basis to break the dietary algae “bottleneck” for ongoing establishment of the standardized population, and also for the artificial culture and resource enhancement of other freshwater mussels.