Fish diversity and spatial distribution pattern in the Nujiang River Basin

Abstract

The Nujiang River is an important international river in Southwest China. It is known as one of the world's biodiversity hotspots, and the region is rich in unique fish resources. Due to its geographical location and topographical conditions, there is a lack of systematic studies on the species diversity and distribution patterns of fish species in the Nujiang River Basin. Methods: In this study, fish composition information of the Nujiang River Basin was systematically sorted out based on data from a five-year field sample of the river basin, as well as data from literature, books and online databases. The spatial distribution patterns of the Nujiang River Basin fish species were analyzed via clustering and ordination methods.