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

[1] It is found in Siberia, China, Korea and Japan.

[1] It has a maximum length of 32.5 centimetres (12.8 in);[1] males have a common length of 12.4 centimetres (4.9 in).

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