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Description |
Geographic Range [top]
Range Description: This species is know to occur in northeastern Viet Nam in the provinces of Cao Bang, Bac Giang, Hai Duong, Ha Nam, Nam Dinh and Ninh Binh.
Countries occurrence:
Native:
Viet Nam
Additional data:
? Estimated area of occupancy (AOO) - km2: 100
? Number of Locations: 3
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population:
No information was found on the population of this species.
Current Population Trend: Decreasing
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: This species inhabits large rivers streams and rivers with mud silty bottom in lowlands and midland.
Systems: Freshwater
Generation Length (years): 15
Use and Trade [top]
Use and Trade: This species is used as a source of food source for local people, poultry, livestock and fish. It is sometime sold in markets
Threats [top]
Major Threat(s): The main threats to the species are over-exploitation, dams dredging, channelization, urbanization and pollution (siltation and contaminates associated with construction, agriculture, mining, and forestry practices).
Conservation Actions [top]
Conservation Actions:
Urgent research needs to be done to verify that it is a valid species and not a variety of C. plicata, as well as biological research. No information was found concerning the current conservation of this species although a monitoring programme is in place to evaluate the quality of water in both rivers.
Citation: Do, V. 2011. Cristaria truncata. The IUCN Red List of Threatened Species 2011: e.T171827A6805137. http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T171827A6805137.en. Downloaded on 03 May 2018.
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