Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Cyprinus barbatus
Species Authority: Chen & Huang, 1977

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) C2a(ii) ver 3.1
Year Published: 2011
Date Assessed: 2011-01-18
Assessor(s): Zhou, W. & Chen, X.-Y.
Reviewer(s): Allen, D.J., Zhao, H. & Cui, K.
The species is restricted to Erhai Lake in China, where it is impacted by threats from agricultural and domestic pollution and introduced species. It has not been recorded since 1982 (W. Zhou pers. comm.) and is assessed as Critically Endangered Possibly Extinct. Prior to the introduction of alien carps from the 1960s, this and other indigenous species, were dominant. If the species is still present it is likely to be below the thresholds for the C2 criteria.
Date last seen: 1982

Geographic Range [top]

Range Description: Endemic to Erhai Lake (250 km2), Yunnan province (Mekong drainage), China. Previous records from Yilonghu Lake are miss-identifications.
Countries occurrence:
Possibly extinct:
China (Yunnan)
Number of Locations: 1
Lower elevation limit (metres): 1972
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It has not been recorded since 1982 (W. Zhou pers. comm. 2011). Prior to the introduction of alien carps from the 1960s, this and other indigenous species, were dominant. It is thought that the population has declined by more than 90%.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It is a fish of the upper and middle layers of the lake and dwells mainly in the deep parts. It swims fast and can not tolerate poor water quality, and dies quickly in turbid water. It feeds on mainly plankton and alga. It spawns from April to September, but mainly in May and June. The generation length is c. 2 years.
Systems: Freshwater
Generation Length (years): 2

Use and Trade [top]

Use and Trade: Previously important in fisheries.

Threats [top]

Major Threat(s): Since 1963, large numbers of introduced fishes including silver carp and big head carp have been introduced into the lake. They have the same feeding habits as Cyprinus barbatus and they compete. At the same time, small species of fishes (e.g. Raspbora and Gobies) were introduced, the adults of which eat the eggs and larvae of Cyprinus barbatus. There has also been habitat degradation (eutrophication) due to pollution from local cities, and from agriculture. The species spawns on macrophytes which are eaten by introduced grass carps and collected for fodder.

Conservation Actions [top]

Conservation Actions: Research is needed into the species current population.

Citation: Zhou, W. & Chen, X.-Y. 2011. Cyprinus barbatus. The IUCN Red List of Threatened Species 2011: e.T166039A6175926. . Downloaded on 10 October 2015.
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