Xenocypris yunnanensis

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• Classification Schemes
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• Bibliography
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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	CYPRINIFORMES	CYPRINIDAE

Scientific Name:	Xenocypris yunnanensis
Species Authority:	Nichols 1925
Common Name/s: English – Kunming Nase
Taxonomic Notes:

Assessment Information [top]

Red List Category & Criteria:	Critically Endangered   C2a(ii)   ver 3.1
Year Published:	2008
Assessor/s:	Chen, X.-Y. & Jiang, Y.-E.
Reviewer/s:	Kullander, F. (Freshwater Fish Red List Authority) & Smith, K. (IUCN Freshwater Biodiversity Assessment Unit)
Justification: Xenocypris yunnanensis is endemic to Lake Dianchi, Yunnan Province, China. The major threats to the species are introduced fish species both competing and causing the habitat loss as introduced grass carp heavily grazed macrophytes in the lake, the loss of breeding sites, over harvesting and water pollution. The population started to decline in the 1970s and the last two specimens were collected in 1985. Habitat quality and quantity continues to decline. More survey work is needed to confirm whether the species is still extant.

Geographic Range [top]

Range Description:	Endemic to Dianchi Lake, Yunnan Province, China.
Countries:	Possibly extinct: China (Yunnan)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Unknown.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	This species lives in the bottom of the medium layer of the water body. Polyphagous, including zooplankton and algae. Spawning from May to June. The eggs stick on gravels at the riverside.
Systems:	Freshwater

Threats [top]

Major Threat(s):

Its loss from the lake is likely due to introduced fish species and loss of breeding sites.

Conservation Actions [top]

Conservation Actions:

No location as a formal protected area.

Bibliography [top]

Chu, X.-L. and Chen, Y.-R. 1989. The fishes of Yunnan, China. Part 1 Cyprinida. Science Press, Beijing. IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: http://www.iucnredlist.org. (Accessed: 5 October 2008).