B vitamins play an important role in improving lipid and glucose metabolism in fish, but there remains a lack of systematic and in-depth research on the effects of folic acid (FA) on lipid and glucose metabolism in the hepatopancreas of fish. This study aims to investigate the effects of dietary FA on lipid and glucose metabolism in the hepatopancreas of grass carp and the potential molecular mechanisms. The 450 healthy grass carp (686.83 ± 1.31 g) were randomly divided into 18 barrels, and fed ...