Can. Corn syrup is rich in nutrients, such as proteins, sugars, inorganic salts and a variety of vitamins, which can be used as a nutrient additive for cultivating rotifers to increase the number and size of rotifers. Cultivating rotifers with a certain concentration of corn syrup culture solution can increase the number and density of rotifers. Therefore, splashing corn syrup in fish ponds can propagate rotifers.