|Scientific Name:||Rhinogobius chiengmaiensis Fowler, 1934|
|Red List Category & Criteria:||Vulnerable A2c ver 3.1|
|Assessor(s):||Jenkins, A., Kullander, F.F. & Tan, H.H.|
|Reviewer(s):||Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)|
R. chiengmaiensis has been assessed as Vulnerable with an inferred population decline of more than 30% in the past ten years, as a result of habitat degradation and pollution in the Chao Phraya river.
|Range Description:||R. chiengmaiensis is known from the Chao Phraya basin in northern Thailand.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The population is thought to be decreasing at a rate of more than 30% over the previous ten years, although detailed numbers are not known.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||R. chiengmaiensis is a demersal species.|
The water of the Chao Phraya basin, particularly the rivers of the lower basin, is heavily polluted; a UNESCO report (2006) states that 'the Chao Phraya River exhibited serious organic and bacterial pollution that was a threat to many species of aquatic life.'
There are a number of large dams and other water diversion projects within the range of this species, which are an additional threat to R. chiengmaiensis in the Chao Phraya and basin; effects of developments such as these to the freshwater ecosystem include alterations to the hydrological cycle, and changes to the levels of sedimentation and dissolved O². More dams are currently under construction and planned for the future. Water from both the Chao Phraya is used for agricultural irrigation and to supply urbanised areas, causing further disruption to the natural hydrological cycle.
|Conservation Actions:||There are no conservation measures currently known to be in action at habitat or species level.|
|Citation:||Jenkins, A., Kullander, F.F. & Tan, H.H. 2009. Rhinogobius chiengmaiensis. The IUCN Red List of Threatened Species 2009: e.T169498A6638577.Downloaded on 20 November 2017.|
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