Initial increase in dye concentration was well tolerated by C. versicolor IBL-04 with good dye degradation and almost no mycelial adsorption. However a gradual decrease in decolorization and, a very negligible adsorption of the dye on the mycelia pellets was noted with higher dye concentrations. Dyes are toxic compound and dyes with different chemical structures are tolerated and decolorized to variable extents by different WRF cultures. In previous studies