Fishes are very sensitive to the changes in their aquatic environment. For this reason they are known as the bio indicator species to monitor the water pollution. Carbonates pesticides are widely used amidst various group of pesticide in intensive agricultural practices to protect the crops from various pest and disease owing to their high insecticidal property, low mammalian toxicity, low persistence and rapid biodegradability in the ecosystem. Present study indicates that pesticide exposure may also fatal to many non-target organism like fish where it hampers its health through impairment of metabolism, occasionally leading to the death of fish.