Koromo, meaning “robed” in Japanese, describes a group of koi whose  quiet elegance finds favor with connoisseurs, even though this breed of  koi did not become available until the early 1950s. Koromo are crossbred  fish; the first example resulted from a spawning between a male Kohaku  and a female Narumi Asagi. The collective name “Koromo” covers several  varieties, the best known being Ai Goromo.