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黑河下游的居延海湿地属中国干旱半干旱内陆湖泊湿地,具有多种生态服务功能。居延海干涸前,鱼类区系组成十分简单;重新蓄水后鱼类种类有很大变化,目前采集到鱼类14种,分别隶属于3目4科,其中鲤科11种,占78.6%;区系组成分归6个区系类群。居延海鱼类具有较高的研究和保护价值,关注居延海鱼类资源现状并提出保护建议具有重要意义。
The Juyanhai wetland in the lower reaches of the Heihe River is arid and semi-arid inland lakes and wetlands in China with a variety of ecological service functions. Before the Yanhai drying up, the fish fauna has a very simple composition; fish species have greatly changed after re-impoundment. At present, 14 species of fish are collected, belonging to 3 orders and 4 families, including 11 species of Cyprinidae, accounting for 78.6% %; The floristic composition is grouped into 6 floristic groups. Juyan fish has a high research and conservation value. It is of great significance to pay attention to the current situation of Juyan fish resources and put forward protection suggestions.