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  1. Koi - Wikipedia

    Koi (Japanese: 鯉; Japanese: [koꜜi], literally 'carp'), or more specifically nishikigoi (錦鯉; Japanese: [ɲiɕi̥kiꜜɡoi], literally ' brocaded carp'), are colored varieties of carp (Cyprinus sp.) …

  2. Koi | Definition, Art, Facts, Symbols, & Size | Britannica

    Koi, (Cyprinus carpio), any of more than 100 ornamental varieties of carp that are best known for their colourful body patterning and are kept as pets in indoor and outdoor freshwater ponds …

  3. Koi Fish: Types, Care Tips, Lifespan & Facts (With Info & Pictures)

    May 7, 2025 · Discover them all in this guide, so you’ll be able to provide your fish with a long and beautiful life. Many varieties. Primary colors are white, black, red, yellow, and blue. The koi …

  4. Koi Fish For Sale | High-Quality Koi & Butterfly Koi | Next Day Koi

    We offer the very best selection of koi for sale in the industry. Put that alongside of our incredible 14-Day Live Arrival Guarantee, and the ability to choose your own delivery date and you have …

  5. Koi Fish Facts - Cyprinus rubrofuscus "koi" - A-Z Animals

    Nov 2, 2025 · Explore the beauty and symbolism of koi fish, their many types, rich history, and why they’re treasured symbols of luck and prosperity.

  6. Koi Fish Care & Pond Guide | PetSmart

    Learn more about how to care for your koi fish the right way through this koi fish care & pond guide.

  7. Koi - San Diego Zoo Animals & Plants

    Koi are ornamental varieties of domesticated common carp that originated in Japan. They are kept for decorative purposes in outdoor ponds with very clean, oxygenated water and plenty of …

  8. Japanese koi - Smithsonian's National Zoo

    Koi fish are colorful, ornamental versions of the common carp. Modern Japanese koi are believed to date back to early 19th-century Japan where wild, colorful carp were caught, kept and bred …

  9. Koi Fish Care Sheet - PetMD

    Sep 26, 2024 · Learn everything you need to know about keeping pet koi fish, including diet and habitat requirements.

  10. Koi (Nishikigoi) Fish Species Profile - The Spruce Pets

    Nov 22, 2023 · Koi are a common backyard pet fish species kept throughout the world. These colorful, "brocaded" carp come in a wide range of color varieties and add beauty to backyard …