Koi, or nishikigoi, (Japanese for colored Koi), belong to the Carp family.

Koi were first introduced to the world at a Tokyo exposition in 1912.

Koi are hardy, cold water fish, which go dormant in the winter.

Koi are long lived fish, with some living over 100 years.

Click HERE for a Koi Activity Sheet!

Our Current Residents

ZooMontana has over 70 Koi. The Koi pond is cared for through the generosity of the Billings Water Skipper Pond Club.


  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii
  • Order: Cypriniformes
  • Family: Cyprinidae
  • Genus: Cyprinus
  • Species: Cyprinus carpio

Animal Facts

  • Omnivore
  • Diurnal

Our Animals