Both algae and microorganisms are essential components in freshwater ecosystem. Inte'ractions between algae and microorganisms are unnegligible agents for the ecological equilibrium. 11 various strains of microorganisms that lyse algae were reported. Their biological characteristics and lytic feature were described. They are different from the others reported previously in varying degrees.According to their major characterictics they should belong to genera Myxococcus, Lysobacter, Flexibacter, Coleomitus, B...