Ogon are one of the most popular pond koi fish for sale. High quality Ogon koi with solid brightly colored metallic skin are always very eye catching. A water garden or Japanese koi pond is not complete without at least one Ogon koi fish. The Ogons compete in Hikari Muji show class for koi fish. Platinum Ogons have solid white metallic skin. Yamabuki Ogon is a solid yellow metallic color koi. Orenji Ogon is a solid orange metallic color. The Kin Matsuba also competes in the Hikari Muji class with the Ogon koi. This koi fish has reticulation or dark pigment on the scale centers, pinecone scales, and a solid colored metallic skin like the Ogon. Kloubec Koi Farm breeds Japanese koi, Longfin and Butterfly koi fish of the Hikari Muji class.

This category includes all Koi with shiny body but devoid of any markings. Hikari-muji are divided into "Yamabuki Ogon (with pure yellow, metallic sheen on the entire body)," "Platinum Ogon (with shining platinum color)," "Orange Ogon (with orange sheen)," "Kin Matsuba (literally 'golden pine needles,' for individual, glittering scales appearing like raised markings)", and "Gin Matsuba (literally 'silvery pine needles,' for glittering scales on the platinum ground which look like raised markings)," etc.

As they don't have any markings, the condition of luster and body conformation become the essential points for appreciation of Hikari-muji group. Excellent luster is one which covers the whole body evenly. Generally, Koi of Hikari-muji group readily get used to humans and will train easily to accept food from owner’s hand. With a hearty appetite, they grow quickly to a large size.