Concentration (ppm) No. of mortality
24h 48h 72h 96h
Control 0 0 0 0
5 0 0 0 0
10 0 0 0 0
20 0 0 0 0
40 0 3 5 10
60 4 9 16 21
Table 3: Cumulative mortality of common carp during acute exposure to ZnSo4 (n=21, each concentration).