Environmental pollution is a matter of global concern today . Third world countries had to response to increasing demands for increasing population,proverty,illiteracy,poor sanitation etc together with the pollution related problems. Pesticide applied to food crop in the field can also leave potential harm ful residue. these increasing pesticide residue effect adversely on whole environment, fauna and flora Including man. The toxicological impact of organ phosphorous pesticide Malathion on the general and behavioral aspects. histopathological analysis brain tissue cf the Indian cat fish H...