Rhodeus suigensis
Rhodeus suigensis is a temperate freshwater fish belonging to the Acheilognathinae subfamily of the family Cyprinidae. 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". When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.