Rhodeus suigensis is a temperate freshwater fish belonging to the Acheilognathinae subfamily of the Cyprinidae family. It originated in inland rivers in Japan and the Korean peninsula. It was originally described as Pseudoperilampus suigensis by T. Mori in 1935, and has also been referred to as Rhodeus atremius suigensis in scientific literature. The species was listed as endangered in 1994 by the World Conservation Monitoring Centre, but in 1996 was relisted as "data deficient".