World Science and Research PublishingGlobal Journal of Animal Scientific Research2345-43772320140708Temporal and spatial analysis of fish diversity and community structure in Lihu Lake,China291298ENDuanJinrongScientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Freshwater Fisheries Research Center, CAFS，Wuxi 214081. dwolf_0733@qq.comZHANGHong-yanXUDong-poLIUKaiZHANGMin-yingSHIWei-gang201406202014070820140707From May 2010 to April 2011, 10 sampling sites were set to analyze fish diversity, community structure and dominant species. The results showed that 3720 fish of 710.860kg were collected by using cage net and gill net, total of 45 fish species belonged to 7 orders and 12 families, which is less than 18 fish species than that of 63 fish species in 1960s, a decrease of 28.57%. The IRI index of Erythrocu1ter dabryi dabryi and Coilia ectenes taihuensis were more than 2000 and the above 2 fish were dominant species. Shannon-Wiener diversity index ranged between 1.759 with 3.011, and Pielou’s evenness index ranged between 0.609 with 0.939, which showed the current state of fish diversity and community was good. The temporal and spatial variation of fish diversity and community structure in Lihu Lake were analyzed, and ecological effect of endogenous treatment was studied, which could provide references to the further treatment of exogenous pollution in Lihu Lake.