| Citation |
Hogan, Z. 2011. Catlocarpio siamensis. The IUCN Red List of Threatened Species 2011: e.T180662A7649359. http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T180662A7649359.en. Downloaded on 29 April 2019. |
Description |
Asia: Maeklong (Ref. 26336), Mekong and Chao Phraya basins (Ref. 12693).
Geographic Range
NATIVE
Extant (resident)
Cambodia; Lao Peoples Democratic Republic; Thailand; Viet Nam
NUMBER OF LOCATIONS
UPPER DEPTH LIMIT
LOWER DEPTH LIMIT
Geographic Range in detail
Population
CURRENT POPULATION TREND
Decreasing
NUMBER OF MATURE INDIVIDUALS
POPULATION SEVERELY FRAGMENTED
No
CONTINUING DECLINE OF MATURE INDIVIDUALS
Yes
Population in detail
Habitat and Ecology
SYSTEM
Freshwater (=Inland waters)
HABITAT TYPE
Wetlands (inland), Artificial/Aquatic & Marine, Forest
GENERATION LENGTH (YEARS)
CONGREGATORY
MOVEMENT PATTERNS
Full Migrant
CONTINUING DECLINE IN AREA, EXTENT AND/OR QUALITY OF HABITAT
Yes
Habitat and Ecology in detail
Threats
Biological resource use
Fishing & harvesting aquatic resources
Natural system modifications
Dams & water management/use
Threats in detail
THREATS
Many rivers in the species range are impacted by urbanisation, dams and pollution (agricultural, urban and industrial) leading to habitat loss and degradation. The species is also highly valued in fisheries and is over-harvested, and this represents the greatest threat to the species, especially the gill net fishery. Populations expanded during the Khmer Rouge period due to the removal of fishery pressures, and declined rapidly from the 1980s onwards.
Primary threats to giant barb include over-harvest and habitat fragmentation. Over-harvest is of particular concern because the Giant Carp is commercially valuable, slow growing, large-bodied and often a component of mixed stock fisheries in areas of heavy fishing pressure.
It is expected that the development of mainstream dams on the Mekong will lead to further declines in the remaining populations through disruption of the species short-distance migrations and further loss of recruitment, however further research is needed on the migratory patterns of the species. |
