Koi, or more specifically nishikigoi, are colored varieties of carp that are kept for decorative purposes in outdoor koi ponds or water gardens. Koi is an informal name for the colored variants of carp kept for ornamental purposes. From Wikipedia
China's decision to not renew quarantine contracts effectively ends its import of Japanese koi fish, a symbol of good luck and a popular fixture in wealthy households, further escalating tensions between the two Asian rivals.
