Actinomycetes are a group of physiologically versatile, high GC, gram-positive, filamentous bacteria found in most environments including terrestrial and aquatic habitats.
Streptomyces has been reported as the dominant genus in freshwater habitats whereas Micromonospora and related genera are predominant in freshwater and marine sediments. There is increasing realization of the potential for wetlands as sources of actinomycetes that produce useful bioactive compounds.Cross reported freshwater habitats as promising sources of bioactive actinomycetes.