Koi

Koi are colorful, ornamental versions of the common carp. The word "koi" comes from the Japanese word for "carp". Modern Japanese koi are believed to have originated in early 19th-century Japan when rice farmers caught, kept, and bred wild, colorful carp. Koi can live between 25 and 35 years, and their scientific name is Cyprinus rubrofuscus "koi".