Research on the Diversity and Dynamic Characteristics of Fish in the Weixin Section of Chishui River
In recent years,the fish resources of Chishui River have experienced the process of damage,protection and recovery.Most of the recent research and practice focus on Chishui River of Yunnan Province,but there is no report on the research of the fish biodiversity in Weixin County.Combined with historical data and recent survey data(2021.11-2023.10),we examined the dynamic characteristics of fish diversity in the Weixin Section of Chishui River.The results show that there are 5 orders,10 families,46 genera and 51 species distributed in Weixin section of Chishui River Basin.Its main stream and its tributaries have a high similarity in fish diversity,the composition of dominant species varies at different spatial scales,the marked achievements were scored in the restored fish species in the study area in recent years and the number of species in 2023 was 2.72 times that in 2019.
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