【摘要】 蒙古境内有大小湖泊3 500多个、河流50余条,分属北冰洋、阿穆尔和亚洲内陆水系,水资源及其丰富,为冷水性鱼类资源的繁衍提供了优良的自然环境,也孕育了许多特有物种。其中阿穆尔河水系的鱼类物种丰富度最高,特别是鄂嫩河流域和贝尔湖,目前存在鱼类高达43种(或亚种),隶属9目13科。阿穆尔河鱼类区系具有物种多样性高,区系成分复杂、特有种和受威胁种类多等特点。本文综合国内外现有资料对蒙古阿穆尔水系的鱼类区系组成及特征进行了总结分析。更多还原

【Abstract】 There are more than 3 500 lakes and 50 rivers in Mongolia,which belong to the Arctic Ocean,Amur and Central Asian Internal drainage basins.Water resources and their abundance provide a good natural environment for the reproduction of cold-water fish resources,and also breed many endemic species.Among them,the fish species richness in the Amur River System is the highest,especially in Onon River and Buir Lake.At present,there are 43 species(or subspecies) of fish,belonging to 9 orders and 13 families.The fish fauna of Amur River System is characterized by high species diversity,complex composition,endemic species and threatened species.In this article,the composition and characteristics of fish fauna in the Amur River System of Mongolia are summarized and analyzed based on the available data at home and abroad.更多还原