Food organism compositions and feeding characteristics of Gymnodiptychus pachycheilus in the middle reach of Yalong River

• LI Xiaoqin, 
• ZENG Rukui, 
• NI Dafu, 
• FENG Gang, 
• WAN Zhuokun, 
• WANG Jie, 
• WU Tongfei, 
• LU Taoxiu, 
• DENG Huatang, 
• YAO Weizhi, 
• FU Mei, 
• LÜ Hongjian