Abstract : Pesticides are continuously reaching water bodies from crop-fields either by rain drainage or by direct processes.  On reaching water bodies these pesticides have fatal-effect on fishes, fingerlings, fries and eggs, causing damages to their organs and affecting their metabolism and survivalness.  Present observation is an attempt to evaluate the toxicity impect of herbicide Pursuit on protein content of liver and kidney of Tilapia mossambica fish fingerlings exposed to acute and chronic sub-lethal concentration of pursuit exhibited significant depletion in the level of protein in liver and kidney.

Keywords: Herbicide, Tilapia, Protein metabolism, Liver, Kidney, Toxicity,Fingerlings.