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Gyrinocheilus pennocki

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII CYPRINIFORMES GYRINOCHEILIDAE

Scientific Name: Gyrinocheilus pennocki
Species Authority: (Fowler, 1937)
Common Name/s:
English Spotted Algae Eater
Synonym/s:
Gyrinocheilops pennocki Fowler, 1937

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2011-02-19
Assessor/s: Allen, D.
Reviewer/s: Baird, I., Parenti, L., Vidthayanon, C., Rainboth, W., Conway, K.W. & Brooks, E.
Justification:
The species is recorded from the Mekong and associated tributaries in Thailand, Lao PDR, Viet Nam and Cambodia. It is a migratory species that is of very high value to local and national economies. The species is likely to be impacted in parts of its range by dams and overfishing. Due to its wide distribution the species is currently assessed as Least Concern, however the negative impacts of dams to be implemented on the river may increase the decline in population to such an extent as to place this species into a threatened category.

Geographic Range [top]

Range Description: This species is endemic to the Mekong River. It is recorded from Cambodia (including the Mekong, Srepok and Sesan Rivers), Lao PDR (from below and above the Khone falls), Viet Nam (Srepok River) and eastern and northeastern Thailand.
Countries:
Native:
Cambodia; Lao People's Democratic Republic; Thailand
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species contributed 1,979 tonnes to annual fishery catches in the Lower Mekong (ICEM 2010), 1.6% of total catches. Considered to be one of the most common species in catches in northeastern Cambodia and southern Lao PDR (Baird 2009).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Found in flowing waters (Rainboth 1996) over rocky habitat; occurs in riffles and rapids during the dry season. Feeds on aquatic chlorophytes. Migrates seasonally up the Mekong mainstream (e.g., from the Tonle Sap River through the Khone Falls; Baird et al. 2003).
Systems: Freshwater

Threats [top]

Major Threat(s): Likely to be impacted in parts of its range by dams and overfishing. It is considered vulnerable to disruption of its spawning migration from development of the proposed mainstream Mekong dams (e.g., ICEM 2010), which predicts "relatively low" (2% to15% for each dam passed) downstream mortality rates, dependent upon the nature of mitigation measure, if any, the proportion of the population that passes successfully through dam turbines, and the number of dams constructed along the migratory route.

Conservation Actions [top]

Conservation Actions: Further research and monitoring is urgently needed into the species population trends and the impacts of proposed hydropower dams.
Citation: Allen, D. 2011. Gyrinocheilus pennocki. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 17 April 2014.
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