Diversity of Fish Resources in the Xushui River

In this work,we conducted surveys on the fish resources in the Xushui River in September 2009 and May 2010.A totally of 29 fish species were found existed in the river basin,which belonged to 4 orders and 10 families.There were mainly the mountain,streams and cold water fish type at Taibai section in the river upstream,and the fish species were relatively fewer.At Chenggu section in the river downstream,where the elevation was low,the fish species were abundant.The two river sections showed significant differences in composition and mass density of fish species in different seasons.In compared with the adjacent mountain rivers,the fish resources in Xushui River were relatively abundant.However,external factors have begun to affect the survival and reproduction of the fish species.River pollution and other anthropogenic interference may cause irreversible ecological impact on the fish resources in the Xushui River.