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Glyptothorax manipurensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Siluriformes Sisoridae

Scientific Name: Glyptothorax manipurensis Menon, 1955
Taxonomic Notes: Glyptothorax manipurensis was described from the Barak River (a tributary of the Brahmaputra River) in Manipur, India (Menon 1955). It has been considered a junior synonym of G. sinense (e.g. Talwar and Jhingran 1991), but Kosygin and Vishwanath (2005) demonstrated its validity.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ac(ii) ver 3.1
Year Published: 2010
Date Assessed: 2010-04-09
Assessor(s): Ng, H.H.
Reviewer(s): Allen, D.J., Vishwanath, W., Dahanukar, N. & Molur, S.
Contributor(s): Molur, S.
Justification:
Glyptothorax manipurensis is known from the Barak River in Manipur, India. The proposed Tipaimukh Dam is predicted to reduce the range of the species by half (from an estimated 1,800 to around 900 km2) thereby impacting at least half the population in the next five to ten years. In addition, the practice of introducing alien invasive fish species into reservoirs by the fisheries department will have a major impact on the species in the future. It is therefore assessed as Endangered (B2ac(ii)) on the basis of reduction of geographic range.

Geographic Range [top]

Range Description:This species is known from the Barak River drainage (a tributary of the Brahmaputra River) in Manipur, India. The Extent of Occurrence is estimated at 42,000 km2 (the area of the Barak drainage), but the Area of Occupancy of is likely to be much less, around 1,800 km2 (estimated on the length of the Barak River (c. 900 km long).
Countries occurrence:
Native:
India (Manipur)
Additional data:
Estimated area of occupancy (AOO) - km2:1800
Number of Locations:1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The proposed Tipaimukh Dam across Barak River will inundate at least 50% of the species' distribution range in the next five to ten years, thereby impacting the population by more than half (W. Vishwanath pers. comm. 2010).
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Unknown
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits swift-flowing rivers with a substrate of sand and rocks.
Systems:Freshwater
Continuing decline in area, extent and/or quality of habitat:Unknown

Use and Trade [top]

Use and Trade: This species is caught as a food fish in artisanal fisheries.

Threats [top]

Major Threat(s): Glyptothorax manipurensis is known from the Iyei River, a tributary of the Barak River. A large (1500 MW) dam, the Tipaimukh Dam, is planned on the Barak River. The impact of this dam on this fast flowing stream specialist needs to be monitored.  It is predicted that more than 50% of the range of the species may be inundated (W. Vishwanath pers. comm 2010). In addition, the reservoir is likely to be stocked by alien invasive fish species by the fishery department as is the practice to date.

Conservation Actions [top]

Conservation Actions: Potential threats to this species also need to be better studied immediately, especially potential impacts from proposed dams on the Barak River.

Citation: Ng, H.H. 2010. Glyptothorax manipurensis. The IUCN Red List of Threatened Species 2010: e.T168492A6502019. . Downloaded on 15 October 2018.
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