Erethistes maesotensis is a species of South Asian river catfish native to Myanmar and Thailand where it is known from Moei River near Mae Sot on the Thai-Burmese border.

E. maesotensis has been observed to inhabit fast-moving waters; during the rainy season, the water depth can increase by at least 3 metres (10 ft).

The substrate mainly consists of small stones and sand with numerous empty gastropod shells.

[1] This species grows to a length of 2.2 centimetres (0.87 in) SL.

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