highly significantP = 0.001
There was a highly significant interaction between hypoxic stress and dietary taurine on the taurine content in gill tissue ( P = 0.001). 3.4 Gill morphology and oxidative damage As shown in Fig. 1 , under normoxia, the gill filaments of grass carp were arranged neatly, the structure of gill epithelial cells was complete, and the gill lamellae were evenly distributed, relaxed and smooth.