Koi
Domesticatit
Scientific classification
Kinrick: Animalia
Phylum: Chordata
Cless: Actinopterygii
Order: Cypriniformes
Faimily: Cyprinidae
Genus: Cyprinus
Species: C. rubrofuscus
Binomial name
Cyprinus rubrofuscus

Koi (, Japanese: [koꜜi]) or mair speceefically nishikigoi (錦鯉, [ɲiɕi̥kiꜜɡoi], leeterally "brocaded cairp"), are coloured varieties o Amur cairp (Cyprinus rubrofuscus) that are kept for decorative purposes in ootduir koi ponds or watter gairdens.