Effectiveness of a novel compound microbial agent for water quality and the gut microbiota of Micropterus salmoides gan Qian Li, Qian Li, Qian Li, Li-Hui Sun, Li-Hui Sun, Li-Hui Sun, Bi-Cheng Yang, Bi-Cheng Yang, Bi-Cheng Yang, Jian-Hu Jiang, Jian-Hu Jiang, Jian-Hu Jiang, Jian-Ming Chen, Jian-Ming Chen, Jian-Ming Chen, Gang Zheng, Ling-Mei Gao, Ling-Mei Gao, Ling-Mei Gao, Jun Peng, Jun Peng, Jun Peng, Jian-Lin Guo, Jian-Lin Guo, Jian-Lin Guo