IUCN threat status:

Data Deficient (DD)

Distribution

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Range Description

The species has a wide distribution in southeast Asia and southern China, with records from the Salween, Chao Phraya, Red and Black rivers in Thailand, and Mekong drainages, as well as several drainages in southern China.

The species is known from northern Viet Nam (including the Da, Thao, Chay, Lo, and Gam rivers in the Hong (Red) and Black rivers, and the Cau and Thuong rivers), southern China (Hong Kong, Fujian, Guangdong, Yunnan, Sichuan). The southernmost limit in Viet Nam is the Ma River (Thanh Hoa province). In Lao PDR it is known in the Ma River and in headwaters of Mekong tributaries southwards at least to the Nam Kading drainage (Kottelat 2001; pers. comm. 2011). It is present in Thailand in the Salween, Chao Phraya, and Mekong basins (Vidthayanon et al. 1997), and in Myanmar in the Salween and Ayeyarwaddy basins (BANCA 2009).

In China, the species is known from the upper Mekong (but not in the upper headwaters) in Yunnan Province (Chu et al. 1989, Kang et al. 2009, He 2010), the Dong Jiang and Bei Jiang drainages (Guangdong Province) and drainages in Hainan Island and their river mouths (Chen et al. 1994), the Puyuangjiang (Yunnan Province), and from Guangxi (Rongxian, Yangsu, and Rongran), Guizhou (Wujiang, Jinpin, and Jianghe), Hunan (Yuangjiang River), Hubei (Qingjiang River) provinces.

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Source: IUCN

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