Folifer yunnanensis 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Folifer yunnanensis
Species Authority: Wang, Zhuang & Gao, 1982
Tor yunnanensis (Wang, Zhuang & Gao, 1982)
Taxonomic Source(s): Zheng, C.-Y. 1989. Fishes of the Zhujiang river. Science Press, Beijing.
Taxonomic Notes: Known as Folifer yunnanensis by some researchers. It was originally described as F. yunnanensis. The genus is in need of further taxonomic investigation. It may be closer to Spinibarbus, and at present it would be better considered within Folifer (M. Kottelat pers. comm. 2011).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2011
Date Assessed: 2011-01-19
Assessor(s): Chen, X.-Y.
Reviewer(s): Allen, D., Zhao, H., Cui, K. & Zhou, W.
The species is endemic to Lake Fuxianhu. It has been severely impacted by the introduction of exotic species of fish, water pollution, and overfishing. It was rare in the early 1990s. The species was not found during species surveys from 2004 to 2006, but the fish was still found in the 1990s. The species may be extinct in its wild habitats, however based on the fact that the species is difficult to survey for, it is assessed as Endangered and further effort is required to confirm its continued presence in the lake. The species required further taxonomic study to confirm its correct taxonomic placement.
Previously published Red List assessments:
1996 Endangered (EN)

Geographic Range [top]

Range Description: Endemic to Lake Fuxianhu, Gehekou, Jiangchuan County, Yunnan Province, China.
Countries occurrence:
China (Yunnan)
Estimated area of occupancy (AOO) - km2: 212
Continuing decline in area of occupancy (AOO): No
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 212
Number of Locations: 1
Continuing decline in number of locations: No
Extreme fluctuations in the number of locations: No
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It was rare in the early 1990s. During fish resource investigation of Fuxian Lake, the species was not found from 2004 to 2006. The fish is possibly extinct in its wild habitat. However the species is difficult to survey for.
Current Population Trend: Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Only found in the lake from the lower and middle areas of open water. Specialised to eat on algae and aquatic insects. It spawns from May to June, laying sinking eggs.
Systems: Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes

Use and Trade [top]

Use and Trade: Harvested for food.

Threats [top]

Major Threat(s): Overfishing, water pollution, and exotic fish are the major threats. Invasive non-native species (grass carps, gobies, and other small fishes), and over-fishing, as well as loss of spawning grounds.

Conservation Actions [top]

Conservation Actions: The species needs more research and site and species conservation actions.

Citation: Chen, X.-Y. 2011. Folifer yunnanensis. The IUCN Red List of Threatened Species 2011: e.T21992A9345434. . Downloaded on 28 November 2015.
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