Black koi fish are koi fish that have the black koi pattern. Many people choose the black koi compared to other koi fish. In general, koi fish, which originate from the carp family, are known to live up to 35 years, though there are records that carp can live for over 200 hundred years! Many koi ponds across the globe have black koi fish simply because koi are magnificent fish that live for a long time.

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

The male and also female koi fish have features that distinguish them from each other. For instance, the male koi fish have concave anal areas and they are characterized by a breeding spot at their heads. 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, based on the temperature of the pond. Koi spawning and fry hatching may happen very quickly, but it usually takes 3 to 12 weeks for the fry to show their distinct colors.

Just like any other koi fish, black koi have to be kept in ponds that are big enough since koi fish tend to grow up to three feet long. The Magoi koi, which is a well known black koi, is known to grow large very quickly. The Magoi koi may appear bronze if it's viewed from all directions other than from the top. Many koi breeders are making use of this particular black koi for breeding together with other koi in order to create large koi in various color patterns. Another black koi is the Karasu koi, also known as 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.

Did you know that nearly all koi change their colors and this is in response to the environment, especially their diet? Healthy koi fish normally have vibrant colors. One particular koi, the Matsukawabake koi, is popular for its changing colors. Although it is regarded as a black koi, the Matsukawabake koi can alter its color pattern when the water temperatures and foods change. This certain koi can appear completely black on one day and entirely white the next. This black koi usually goes back to its original colors when its environment and diet go back to normal or original state.

Between the different varieties of black koi, the Kumonryu koi or commonly known as dragonfish koi, appear to be the favorite black koi of most koi enthusiasts. This black koi is tagged "dragonfish" because it resembles an ancient dragon in the paintings. This black koi tends to undergo color changes when the times change.

Koi ponds from all over the world will have koi fish in a wide range of color patterns. Koi fish are a wonderful 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!

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