Boxplots showing the weight of the native carp rohu (a) and native butter catfish (b) in different treatment groups under outdoor experiment (T1 and T2, high- and low-Amazon sailfin catfish density treatment groups respectively) over 120 days. Midline within the box is the median; upper and lower limits of the box represent the third and first quartile (75th and 25th percentile) respectively. Different letters on the top of the boxplot represent significant difference (p < 0.05; one-way ANOVA followed by post hoc Tukey test) between treatments at different time points.