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Nature

Koi Fish

What is koi fish?

· Emily Grant

Key facts

Scientific name Cyprinus carpio[2]
Common name koi[2]
Japanese name nishikigoi[1]
Family Cyprinidae[3]
Origin Japan[4]

Koi fish are ornamental varieties of the common carp, kept mainly for decorative purposes in ponds and water gardens. They are known for their colorful body patterning and are often called *nishikigoi* in Japanese. [2] [4]

Context

Koi fish are ornamental varieties of the common carp, kept mainly for decorative purposes in ponds and water gardens. They are known for their colorful body patterning and are often called *nishikigoi* in Japanese. [2] [4] The scientific name is *Cyprinus carpio*, and they belong to the family Cyprinidae. [2] [3] Originating in Japan, koi are kept in indoor and outdoor freshwater ponds throughout the world. [4] [2]

Documented claims

  • Koi are ornamental varieties of domesticated common carp. [4]
  • The word 'koi' comes from Japanese and means 'carp.' [3]

Questions and answers

Why are koi fish so special?

Koi are special because they are ornamental varieties of carp, bred for their vibrant colors and patterns, and they hold cultural significance in Japan. [4] [1]

Can koi fish live in Canada?

Yes, koi can live in Canada if kept in ponds that do not freeze solid, as they are hardy fish. [2]

Can koi fish be eaten?

Koi are carp, and while carp can be eaten, koi are primarily kept for ornamental purposes, not for food. [4]

Sources

  1. Japanese koi — nationalzoo.si.edu (retrieved August 3, 2026)
  2. Koi — newworldencyclopedia.org (retrieved August 3, 2026)
  3. KOI Definition & Meaning — dictionary.com (retrieved August 3, 2026)
  4. 6 Koi Fish Facts You Should Know - PetMD — petmd.com (retrieved August 3, 2026)

Sources last checked August 3, 2026. · More in Nature