This species was restricted to the Yilong Lake in Yunnan, China; in 1981, this lake dried out completely for about 20 days as a consequence of water extraction for agriculture.
The Yilong Whitefish had no chance to survive and is now extinct.
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edited: 27.01.2022
The Yangzong Whitefish, which was described in 1980, was restricted to the Yangzong Lake in Yunnan, China.
The populations of the species collapsed due to pollution and the introduction of non-native fish species; it has not been found during the most recent surveys in 2008 and might well be extinct.
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edited: 27.01.2022
The Qilu Whitefish was endemic to Lake Qilu in Yunnan, China.
The species disappeared after the introduction of non-native fish species into the lake around 1964; it was last seen in the early 1980s and is now considered most likely extinct.
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edited: 27.01.2022