Department of Biotechnology and Biochemistry Sardar Bhagwan Singh University. Uttarakhand
Laboratory analysis was made to check the toxicological effect of cypermethrin on fresh water catfish (Clarias batrachus). Exposure of (LC 50) sub-lethal dose of cypermethrin resulted significant alterations in protein content in various tissues of fish. At sub-lethal concentration cypermethrin resulted alterations in total protein, as in muscles (-13.95%), in liver (-27.58%), in intestine (-16.88%) and in gills (-13.72%). Highest reduction of protein content level was recorded (-27.58%) in liver 0.029 μl/100mg dry weight. Cypermethrin has shown strong piscicidal capacity against selected catfish and adversely affected the protein content.