Project description:Three freshwater planktonic filamentous cyanobacterial strains, Dolichospermum planctonicum NIES-80, Planktothrix agardhii NIES-905, and Sphaerospermopsis reniformis NIES-1949, were sequenced. The genome sizes of NIES-80, NIES-905, and NIES-1949 were 4,571,002?bp, 5,512,454?bp, and 6,025,023?bp, and the number of protein-coding genes in each genome was 4,009, 4,925, and 5,408, respectively.