Pseudaspius, commonly called redfin daces,^[1] are a genus of cyprinid fishes found in marine and freshwater in eastern Asia, specifically the countries of Russia, Mongolia, China and Japan. Most species are diadromous into the Sea of Japan.

There are currently five recognized species in this genus.^[2]

• Pseudaspius brandtii (Dybowski, 1872)
• Pseudaspius hakonensis (Günther, 1877)
• Pseudaspius leptocephalus (Pallas, 1776)
• Pseudaspius nakamurai (Doi & Shinzawa, 2000)
• Pseudaspius sachalinensis (Nikolskii, 1889)

This genus was formerly monotypic, featuring only P. leptocephalus, until it was expanded by the addition of the four species that made up the genus Tribolodon.