K.O.I. is an international group of expert hobbyist-volunteers who want to promote FUN in the Koi hobby by teaching all aspects of Koi and pond keeping, with a focus on Science.

Koi (鯉, Japanese:, literally "carp"), or more specifically nishikigoi (錦鯉, Japanese: [ɲiɕi̥kiꜜɡoi], literally "brocaded carp"), are colored varieties of carp (Cyprinus sp.) that are kept for decorative purposes in outdoor koi ponds or water gardens. Koi is an informal name for the colored variants of carp kept for ornamental purposes.

The mission of Koi Organisation International is to promote and improve the International enjoyment of the Koi hobby by providing hobbyists with education and mentoring regarding good Koi husbandry, the recognition and management of Koi and pond systems. Why Register? Why Become a Member?

To earn K.O.I. certification as a Certified Koi Keeper, a person must take and pass all 9 courses in the Certified Koi Keeper curriculum specified below: K.O.I. 201 – Water Quality K.O.I. 202 – Pond Construction

Quality Pond Grade Koi, World Class Tategoi Koi & Grand Champion Koi. Welcome to Koi.com, the on-line home of Pan Intercorp, America's premier importer of quality Japanese Koi.

Use this Koi Variety Guide to identify your favorite varieties, or learn a little more about each variety. Kokaku, the oldest and most well known variety of koi, have a solid white base with patterns of red overlaid on top of the white. Top quality Kohaku display a bright, blemish-free white combined with deep, vibrant red tones.

Jan 31, 2022 · To help understand the different koi varieties that are available here at Keruto Koi, we have put together this Ultimate Guide containing useful information on all of the most popular koi varieties, and some more unusual varieties as well! What are koi carp?

Learn how to care for your koi fish through helpful articles and koi stories.

Everything you should know about the Koi. The Koi is a domestic variant of the Amur carp, and a beautiful resident of Koi ponds across the globe.

Feb 10, 2025 · Caring for koi properly ensures they grow healthy, live long, and display vibrant colors. Whether you’re a beginner or an experienced koi keeper, understanding their care is essential. This guide covers pond setup, water quality, feeding, seasonal care, and common health issues to help you keep your koi happy and thriving.