Biochemical Comparison between Cypermethrin and Fenvalerate Harmful Effect on Catfish Clarias batrachus (Linnaeus, 1758)

Effectiveness of Cypermethrin in comparison with Fenvalerate as toxic agent used as insecticides and pesticides were studied on Catfish Clarias batrachus (Linnaeus, 1758). Both agents showed toxicity and intolerance effects which is harmful for fishes. Fishes were exposed to the concentration of pyrethroid insecticide Cypermethrin for 24h as the LC50 value was found to be (1 g/l) and one fourth of LC50 (0.25 g/l) was selected. The other insecticide Fenvalerate concentration for 24 h was LC50 (250 g/l) and one tenth of LC50 (25 g/l) as lethal concentration for acute toxicity studies. Doses followed till 96 h at every time interval of 24 h. Biochemical changes was observed in all three Normal, Cypermethrin and Fenvalerate conditions.