Plankton: In the waters of rivers, lakes, reservoirs, and Chibatang, there are plants such as green algae, diatoms, blue-green algae, dinoflagellates, golden algae, yellow algae, and bare algae, but due to differences in environmental conditions, these planktons The distribution of plant species and numbers varies greatly. Zooplankton species include protozoa, rotifers, cladocera, copepods, and crustacean larvae. Benthic animals include aquatic hairy species, nematodes, molluscs, and aquatic insect larvae. Aquatic plants: Commonly found in duckweed, duckweed, manjianghong, black-leaf algae, algae, malay, alfalfa, green grass algae, bittergrass, water hyacinth, etc. (Excluding artificial cultivation of lotus root, Zha Mushroom, Jiang melon, quail, and other biological resources unrelated to fish feed).