Black koi fish are koi fish that have the black koi pattern. Many people favor the black koi than other koi fish. Overall, koi fish, which originate from the carp family, are known to live up to 35 years, although there are records that carp can live for over 200 hundred years! Several koi ponds across the globe have black koi fish just because koi are beautiful fish that live for a very long time.

Koi fish were initially bred from carp in Japan. Koi come in many colors, not just black. Black koi fish specifically were bred from carp fish that had one or two colors. Thanks to the dedication and determination of Japanese koi breeders, koi breeders from around the world, as well as koi lovers, are able to take pleasure in a wonderful colorful array of koi fish today.

The male and female koi fish have features that distinguish them from each other. For instance, the male koi fish have concave anal areas and they are identified by a breeding spot on 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 usually takes 3 to 12 weeks for the fry to show their diverse colors.

Like any other koi fish, black koi have to be placed in ponds that are big enough since koi fish tend to grow up to three feet long. The Magoi koi, which is a popular black koi, is known to grow large very quickly. The Magoi koi may appear bronze if it's viewed from all directions besides from the top. Many koi breeders are using this unique black koi for breeding together with other koi in order to create large koi in different 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 color.

Are you aware that almost all koi change their colors and this is in reaction to the environment, especially their diet? Healthy koi fish typically have vibrant colors. One particular koi, the Matsukawabake koi, is popular for its changing colors. Although it is considered as a black koi, the Matsukawabake koi can change its color pattern when the water temperatures and also foods change. This certain koi can appear completely black on one day and completely white the next. This black koi usually goes back to its original colors when its environment and diet go back to normal or original condition.

Among the different types of black koi, the Kumonryu koi or commonly known as dragonfish koi, appear to be the favorite black koi of many koi enthusiasts. This black koi is tagged "dragonfish" because it resembles an ancient dragon in the paintings. This black koi tends to go through color changes when the seasons change.

Koi ponds from across the globe will have koi fish in a wide range of color patterns. Koi fish are a wonderful addition to any pond. With their changing colors, they can provide unlimited hours of entertainment for everybody. Why, even the black koi fish alone are diverse enough in their color changes!

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