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论文摘要：	Amur minnow, Rhynchocypris lagowskii (Dybowski, 1869), is a small omnivore cyprinid and native from Lena River in the north to the Yangtze River in the south. In August 2022, we first caught this species in Duobu Reservoir in the Niyang River, a tributary of middle reaches Yarlung Tsangpo River in Xizang, China. Thereafter, more and more individuals (adults and juveniles) of this species were caught in the middle reaches of Yarlung Tsangpo River. The annual variation of gonosomatic index and body length distribution of two years fully confirmed that the species has successfully established populations and dispersed in the Yalung Tsangpo River. This study documents one of the fastest freshwater fish successful invasions recorded in China, as evidenced by the establishment of large wild populations and rapid range expansion within just one year of initial introduction. The rapid range expand of Amur minnow in the Yarlung Tsangpo River is primarily attributable to multiple human-mediated introduction events (religious release) at various locations. As an omnivore and cold-adapted cyprinid with similar diet of native, Amur minnow has potential significant impact to native fishes and biodiversity.

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