Types of Koi
Koi are beautiful 'ornamental' versions of the common carp species. They originated in China and then spread to Japan and has been cultivated mainly there ever since. The word “koi” is Japanese for carp, and the word “nishikigoi” means ornamental carp. It was in the nineteenth century in the Niigata prefecture of Japan that koi breeding emerged. According to history and legend, the farmers of that prefecture noticed colourful carp varieties in their rivers, that they were more easily snapped up by the birds because of their attractive colors, and began breeding them. Over time, a classification system developed according to their color variations and qualities, and now, there is an accepted categorization by which koi varieties are known by. Depending on the quality of their colors, rarity, patterning and sheen. They have become very popular indeed in many countries around the world now, and we’re all now exposed to the language and technologies of the Japanese when it comes to koi breeding and cultivation. Apart from their beauty and sturdiness as fish, koi has become legendary because of the fact that they can grow to very large sizes, and is limited relatively by the size of the pond that they reside in. And also they are renowned for their ability to live very long years.
Here you will find a list of the most popular koi varieties that are usually traded on foreign markets. Unfortunately, in Mauritius many of these varieties are not well kwown due to their scarcity from koi farms that we trade from. Anyway, most of the existing koi varieties are included in this list for your reference.
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. The even distribution of the pattern along the body is also very important.
Variations of Kohaku include Doitsu Kohaku, Gin Rin Kohaku, Maruten Kohaku and Tancho Kohaku.
Tancho is a hugely popular variation of Kohaku, in which the only red pattern appears as a single red dot on the head. The symmetry and placement of the Tancho mark are main factors in determining the quality of any particular koi.
Variations of Tancho include Gin Rin Tancho and Doitsu Tancho.
Asagi are koi that display a blue net-like pattern on the back, complemented by red or orange on the belly, gill plates, fins and body. The red or orange pattern will develop up from the bottom of the body as the koi ages. Top quality Asagi have a red pattern that does not extend above the lateral line.
Variations of Asagi include Gin Rin Asagi and Hi Asagi.
Shusui are the scaleless (doitsu) version of Asagi. The blue net pattern is replaced by a single row of scales along the dorsal line at the top of the back. Like Asagi, the belly, gill plates, sides and fins of Shusui display an orange or red pattern.
Variations of Shusui include Gin Rin Shusui and Hi Shusui.
Matsuba are koi that combine a solid, metallic colored base with a black net pattern. The base color of Matsuba can vary. Gin Matsuba have a white base color, while Ki Matsuba have a yellow base color, and Aka Matsuba have a red base.
The sole variation of Matsuba is Doitsu Matsuba.
Platinum Ogon, also known as Purachina Ogon, are solid, metallic-white koi. A clear white head and unblemished white body are crucial to the quality of a Platinum Ogon.
Variations of Platinum Ogon include Gin Rin Platinum Ogon and Doitsu Platinum Ogon.
Yamabuki Ogon are koi of a solid, metallic-yellow color. As with other Ogon koi, a clean, unblemished head and body are important.
Variations of Yamabuki Ogon include Gin Rin Yamabuki Ogon and Doitsu Yamabuki Ogon.
Taisho Sanke, or Sanke for short, are koi with a solid white base overlaid by patterns of both red and black. It is commonly said that a high quality Sanke pattern begins with a great Kohaku pattern, to which the black is a welcome complement.
Variations of Sanke include Doitsu Sanke, Maruten Sanke, Tancho Sanke, and Gin Rin Sanke.
Showa Sanshoku, more commonly known as Showa, are koi that display white and red/orange patterns over top of a black base color. Showa can be easily confused with Sanke. In Showa, the black patterns will wrap all the way around the body, instead of appearing only on the top half of the body.
Variations of Showa include Tancho Showa, Maruten Showa, Gin Rin Showa, Doitsu Showa and Kin Showa.
Goromo are, in essence, a Kohaku with blue or black edging added to each red scale. There are three sub types of Goromo: Budo Goromo have a blue edging outside of the scales that creates a grape-like cluster effect; Ai Goromo have blue edging only on the inside of the red scales; Sumi Goromo have black edging on the scales that can make the patterns appear almost completely black.
Goshiki are koi with a solid white base with black and blue edging, and red and black patterns overlaying the white, black and blue colors of the base. Goshiki translates as "five colors".
Variations of Goshiki include Gin Rin Goshiki and Tancho Goshiki.
Hariwake display a solid metallic-white base coupled with bright, vibrant patterns of yellow or orange. The bright, luminous white of Hariwake differs from the softer, matte-white of Kohaku and Sanke. Hariwake with a bright yellow pattern are commonly referred to as Lemon Hariwake.
Variations of Hariwake include Tancho Hariwake, Gin Rin Hariwake, Doitsu Hariwake (also known as Kikusui).
Shiro Utsuri are koi with a black base overlain by areas of white. A high quality Shiro Utsuri will combine clean white patterns with a deep, lacquer-like black. A split head of both black and white is also an important requirement for top quality specimen.
Variations of Shiro Utsuri include Gin Rin Shiro Utsuri, Gin Shiro Utsuri and Doitsu Shiro Utsuri.
Hi Utsuri combine the lacquer-black base color with patterns of deep red or orange. Red Hi Utsuri are superior to orange. Many Hi Utsuri will display a dull orange pattern at a young age, which may develop into a brighter and more desirable red pattern as the koi grows and matures.
Variations of Hi Utsuri include Gin Rin Hi Utsuri and Doitsu Hi Utsuri.
Ki Utsuri, by far the rarest type of Utsuri, combine patterns of yellow over a lacquerish black body. Ki Utsuri are judged by the same criteria as Shiro and Hi Utsuri.
Variations of Ki Utsuri include Gin Rin Ki Utsuri and Kin Ki Utsuri.
Chagoi are solid colored brown or bronze koi with a subtle reticulated net pattern. Although they are not nearly as flashy or colorful as other types of koi, Chagoi are still a welcome addition to koi ponds. Chagoi are very friendly and very docile. This makes them the easiest to train to hand feed.
Variations of Chagoi include Gin Rin Chagoi and Doitsu Chagoi.
Soragoi, similar to Chagoi, are koi of a solid grey or silver color, combined with a subtle net pattern. Also like Chagoi, mature Soragoi are very docile and will be among the first koi in your pond to learn to hand feed.
Variations of Soragoi include Gin Rin Soragoi and Doitsu Soragoi.
Kujaku are koi with a solid white base, accented by a black net pattern along with patterns of red/orange/yellow. The net pattern is created by a black edging on each individual scale.
Variations of Kujaku include Doitsu Kujaku, Tancho Kujaku and Maruten Kujaku.
Kumonryu are scaleless (doitsu) koi with patterns of grey or white combined with black. Probably the most intriguing variety of koi, Kumonryu will completely change their pattern many times throughout their life. They can go anywhere from solid white to solid black, or any conceivable combination in between.
Beni Kumonryu are Kumonryu with the presence of a third color, red. Just like Kumonryu, Beni Kumonryu can change their pattern completely many times throughout their lifespan.
Kikokuryu are scaleless (doitsu) koi with a white base combined with areas of black inside the single row of scales, along the back outside of the row, and on on the head around the eyes and nose. Kikokuryu are commonly thought to be metallic versions of Kumonryu.
Kin Kikokuryu combine orange or yellow with the black and white patterns of Kikokuryu to form the newest variety of koi in the industry.
Although technically they are the Doitsu version of Hariwake, scaleless white koi with patterns of orange or yellow are commonly referred to as Kikusui. The bright, metallic colors of Hariwake are also present in Kikusui.
Tancho Kikusui are the sole variation of Kikusui.
Ochiba Shigure, commonly referred to as Ochiba, combine the brown/bronze of Chagoi with the silver/grey of Soragoi. The name Ochiba Shigure translates as "autumn leaves falling on water", a reference to the silver and bronze pattern.
Variations of Ochiba include Gin Rin Ochiba and Doitsu Ochiba.