Previous studies indicate the high toxicity of
deltamethrin to fish species and our results are in good
agreement with these reports. Boateng et al. [23]
reported that young fish are more susceptible and
different species respond unlike to concentrations of
chemicals: Mittal et al. [24] estimated deltamethrin toxicity
to P. reticulate to be LC50=0.016 ppm. Viran et al. [10]