Fig. 3. Ammonia (NH4+) values between salinity and dose of clove oilin river puffer, Takifugu obscurus (a) and tiger puffer, T. rubripes (b). Values are means± SE of triplicate experiments (n=50). Actually n=50 for each experiment because the means and SE were calculated separately for each group. Different letters on error bars are significantly different between no anaesthesia and clove oil anaesthesia groups (p<0.05).
