The name Shusui comes from the original breeder of the variety Akiyama. "Shu" can also be read "Aki" (for Akiyama) in Japanese, and "-sui" means blue. Shusui were the first Doitsugoi, created by crossing a mirror carp with an Asagi. Moto Aka in the base of both pectoral fins and a strong row of scales along the ridge of the back frame this awesome Shusui perfectly!