Abstract:
The 96-hour LC^q values of malathion were determined using Trichogaster pectoralis Regan (Sepat siam) and Sarotherodon mossambicus Peters (Tilapia) as test
animals. The LC 50 96-hr of sepat siam to malathion was 0.98 ppm while that of Tilapia was 0.29 ppm. Tilapia was approximately three times more sensitive to malathion than sepat siam.