Toxicological effects of synthetic pyrethroid cypermethrin on biochemical parameters of Trichogaster fasciata

Present study was undertaken to evaluate effect of Cypermethrin on a freshwater fish Trichogaster fasciata. The LC50 values at 24 hrs and 48 hrs were found to be 0.69 and 0.46 ppm respectively. The results indicated changes in behavior of the fish, such as irregular, abrupt, erratic, jerking and darting movements, imbalanced swimming activity and fanning after 12 hours of exposure Changes in protein, cholesterol and lipid contents were also observed in the treated fish, depending on time of exposure and concentration of the pesticide.