“…The TGs consist of a glycerol backbone to which three acylated FAs are attached (Yuan et al, 2021;Wang et al, 2022). The positions of FA attachment are, respectively, named by stereospecific numbers, sn-1, sn-2, and sn-3 in sequence from top to bottom, and the stereospecific positions of individual FAs are key to determine the fate of the TG metabolism (Hussein et al, 2019;He et al, 2021). Therefore, the location of FAs on the glycerol backbone is of importance for fish to use lipids (Liu et al, 2019).…”