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Description |
Asia: India and upper Myanmar.
Geographic Range [top]
Range Description: The species is recorded from Sittwe (formerly Akyab) and in Tandaung Township, Sittaung River Drainage (C. Ferraris, NMNH), Myanmar, and from locations in northeastern India (Kolodyne (Kaladan) and Mat (a tributary of the Koladyne) Rivers of Mizoram) The species is apparently restricted to the Koladyne River and its tributaries; records from Arunachal Pradesh (two records in the Brahmaputra drainage; Centre for Environmental Management and Participatory Development, 2009) most likely refer to S. semiplotus (V. Waikhom, pers. comm., 2010).
Countries occurrence:
Native:
India (Mizoram); Myanmar (Myanmar (mainland))
Additional data:
? Continuing decline in area of occupancy (AOO): Unknown
? Extreme fluctuations in area of occupancy (AOO): Unknown ? Estimated extent of occurrence (EOO) - km2: 15000-20000
? Continuing decline in extent of occurrence (EOO): Unknown ? Extreme fluctuations in extent of occurrence (EOO): Unknown
? Number of Locations: 3-5 ? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: Unknown ? Lower elevation limit (metres): 159
? Upper elevation limit (metres): 464
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population:
Talwar and Jhingran (1991) considered it a rare species. Further survey work is needed to determine whether or not this species is experiencing a decline, or is undergoing extreme population fluctuations.
Current Population Trend: Unknown
Additional data:
? Continuing decline of mature individuals: Unknown
? Extreme fluctuations: Unknown ? Population severely fragmented: No
? Continuing decline in subpopulations: Unknown
? Extreme fluctuations in subpopulations: Unknown ? All individuals in one subpopulation: Unknown
Habitat and Ecology [top]
Habitat and Ecology:
The species inhabits moderate to fast flowing mountain streams and rivers with rocky bed.
Systems: Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes
Use and Trade [top]
Use and Trade: This rare species attains a length of about 20 cm; of no interest to fisheries (Talwar and Jhingran 1991).
Threats [top]
Major Threat(s):
Hill streams are threatened by sedimentation due to deforestation and agricultural practices resulting in continuing decline in the quality of habitat.
The Kaladyne River is subject to development as part of joint Indo-Myanmar project to develop river transport links to the Myanmar port of Sitwe. In addition, the impact of the Shwe Gas Project on the river and its habitats requires further study.
Conservation Actions [top]
Conservation Actions:
Research on distribution, biology, habitat use, population, trends and threats are needed.
Citation: Singh, L. 2010. Semiplotus modestus. The IUCN Red List of Threatened Species 2010: e.T166508A6224485. http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T166508A6224485.en. Downloaded on 06 January 2017.
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