Zacco evolans Jordan and Evermann, 1902 Opsariichthys evolans is a species of [freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies.

[1][2][3] It inhabits freshwaters of southeastern China and Taiwan.

[1][4] It has a maximum male length of 9.0 centimetres (3.5 in) and a maximum female length of 7.0 centimetres (2.8 in).

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