he silver catfish (420.1 ± 8.8 g and 21.2 ± 2.3 cm) were captured from a cage net in a fish farm and then transported at a loading density of 275.1 g/L for 6 h in nine plastic bags (7 L of water and 8 L of pure oxygen), divided into three groups (three replicates each, n = 12 per group): 0 (control), 5 or 10 μL/L MECB.