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Black koi fish are koi fish that have the black koi pattern. A lot of people choose the black koi than other koi fish. Overall, koi fish, which originate from the carp family, are known to live up to 35 years, even though there are records that carp can live for beyond 200 hundred years! Several koi ponds across the globe have black koi fish just because koi are magnificent fish that live for a long time.

Koi fish were initially bred from carp in Japan. Koi are available in several colors, not just black. Black koi fish particularly were bred from carp fish that had a couple of colors. Thanks to the commitment and patience of Japanese koi breeders, koi breeders from around the world, as well as koi lovers, are able to enjoy an amazing colorful array of koi fish today.

The male and female koi fish have characteristics that separate them from each other. For example, the male koi fish have concave anal areas and they are characterized by a breeding spot at their heads. Soon after spawning, the female koi is capable of laying as much as a thousand eggs. The fry (baby koi) hatch anywhere from four to seven days, depending on the temperature of the pond. Koi spawning and also fry hatching may happen very quickly, but it normally takes 3 to 12 weeks for the fry to show their diverse colors.

Like any other koi fish, black koi have to be kept in ponds that are large enough since koi fish have a tendency to grow up to three feet long. The Magoi koi, which is a popular black koi, is seen to grow large very fast. The Magoi koi may look like bronze if it's viewed from all directions besides from the top. Many koi breeders are using this particular black koi for breeding with other koi to be able to create large koi in various color patterns. Another black koi is the Karasu koi, also called the crow koi. The body of this koi is black and its fins are also black. The Karasu koi's belly may also be white or orange in colour.

Did you know that almost all koi change their colors and this is in reaction to the environment, especially their diet? Healthy koi fish normally have vivid colors. One particular koi, the Matsukawabake koi, is popular for its shifting colors. Although it is considered as a black koi, the Matsukawabake koi can alter its color pattern when the water temperatures and foods change. This certain koi can appear totally black on one day and entirely white on the following day. This black koi normally goes back to its original colors when its environment and diet go back to normal or original condition.

Between the different kinds of black koi, the Kumonryu koi or commonly known as dragonfish koi, appear to be the favorite black koi of many koi lovers. This black koi is tagged "dragonfish" because it resembles an ancient dragon in the paintings. This black koi has a tendency to undergo color changes when the seasons change.

Koi ponds from around the world will have koi fish in a wide variety of color patterns. Koi fish are an amazing addition to any pond. With their varying colors, they can provide unlimited hours of entertainment for everyone. Why, even the black koi fish alone are diverse enough in their color changes!