As the cheapest feed ingredient, carbohydrates exert a protein‐sparing effect. However, excessive carbohydrate intake can induce hepatic metabolic disorders and lead to metabolic diseases in fish. The GIP/GIPR axis plays a vital role in regulating lipid metabolism and glucose uptake. To evaluate the functions of GIP and GIPR in largemouth bass, we cloned their cDNA sequences. We analysed the tissue‐specific expression of both...