Species composition and community diversity of fishes in Caohai Lake and sur-rounding reservoirs
From June 2017 to December 2018,we conducted two surveys of fish stocks in Caohai Lake and sur-rounding reservoirs,and collected more than 5000 fish specimens.There were 12 species of fishes in Caohai Lake and surrounding reservoirs,belonging to 12 genera,6 families and 3 orders.The main species of fish caught were Cyprinus carpio,Carassius auratus,Hypseleofris swinhonis,Pseudoperilampus lighti,Pseudorasbora parva,Misgurnus anguillicaudatus,Monopterus albus,Ctenogobius giurinus,Abbottina rivularis,Platysmacheilus exiguous,Hemiculter leucisculus,and Yunnanilus caohaiensis.Based on the analysis and measurement of the composition of the catch,it was found that the dominant species was Pseudorasbora parva.Fish diversity analysis showed that Aodi Maoshui Reservoir,Lexi Reservoir,Caohai Lake,Yangwanqiao Reservoir and Ganhaizi Reservoir had relatively high fish di-versity,followed by Chongzihe Reservoir,and Xueshan Reservoir and Dengjiaying Reservoir had the lowest fish di-versity.The one endemic species was Yunnanilus caohaiensis,which was only found in Yangwanqiao Reservoir.
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