Nishikigoi, commonly referred to as "Koi" are the national fish of Japan, therefore the fish's name is derived from the Japanese language. "Goi or Koi" is the Japanese name for carp.
Koi Varieties-Koi For Sale-Japanese Koi-Israeli Koi
Contrary to belief, Koi are not indigenous to Japan. Koi were believed to be introduced to Japan with the invading Chinese and a first account of them being kept by an emperor in Japan, apparently dates Back to AD 200.