伊犁河(中国境内)土著鱼类的分布与演化

The Native Fisher Distributed and Made of Evolution in the Yili River (China's Section)

伊犁河（中国区段）现有土著鱼类１０种，鱼类区系组成以中亚高山复合体鱼类为主。由于伊犁河三条主要支流的地理环境不同，使这些鱼类的分布差异较大；受人类渔业活动和鱼类移植的影响，土著经济鱼类的资源正在衰退，其生存区域逐渐向低水温高海拔区缩小，其中银色裂腹鱼已濒临灭绝。本文就土著鱼类在伊犁河不同河段的分布与演化进行了论述。

There were 10 species native fishes in the Yili River (China's section). The fishes Ichthyological fauna composition was simple. Majority fishes belonged to the High Cen+ro-asiatic Subregion. The different of the natural environment between each branch, so it was more different to the fishes distributed in the each branch of the Yili River. Due to be affected by aquatic activities and transplanting fishes, resources of the native economic fishes was failing. The area of the fishes living was reduced to the area which is lower water temperature and higher altitute. Racoma argentata are in danger of becoming extinct. This them discussed the native fishes distribution and evolution in the each branch and the Yili river.