Opsariichthys kaopingensis is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies.

[2][3][4] It is endemic to southern Taiwan and has a maximum standard length of 11.4 centimetres (4.5 in).

[2] The specific name kaopingensis refers to its type locality, Kaoping River.

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