Levels of lipid peroxidation (TBARS) in brain, liver and muscle tissue of Cyprinus carpio exposed to commercial herbicide containing quinclorac (344.60 μg/L) at rice field condition for 7 days (A), 30 days (B) and 90 days (C). Data represent the mean±SD (n=15). *Indicates significant difference between control and exposed group (P≤0.05).