The Impressive Black Koi

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If you’re looking for something new and exciting to add to your existing fishpond or are contemplating building a new one you should consider the Koi species of fish. They make an exciting and entertaining addition to your fishpond.

The Koi species of decorated carp come in various colours and patterns.  Black Koi are similar to other varieties with the exception of their dark pigmentation and not much else.  Koi  are long-lived fish and can survive for as long as 200 years, but the normal expected lifespan should be between 25 and 35 years.  Koi are regularly viewed in outdoor ponds all around the globe.  The distinction between Koi males and females can easily be recognized by the males’ concave anal section.  On occasion the males also display breeding spots on the head.  A Koi female can lay as many as 1000 eggs during one mating season.  Immature Koi are referred to as fry and will start hatching in about four to seven days, depending on the variations of the water temperature.  Koi pigmentation will not be displayed until the immature fish are between three to twelve weeks of age.

The Japanese people initially took carp mutations to breed these colourful fish.  The colour selection was minimal at the start of this process, with only two colours being attained.  More selective breeding of Koi produced different colour varieties and combinations of patterns. 

Black Koi can reach an impressive 36 inches in length.  Because of their length, large ponds are the most suitable way to keep all Koi including Black Koi.  One of the first Koi black mutations was the Magoi Koi that also came with the ability to grow to a very large size.  When closely looking at a Magoi Koi they appear black when viewed from above, but are actually deep bronze in colour. Magoi Koi DNA is now being reintroduced into other species because of the potential involved in increasing the size and to hasten the growth rate of a new species.

The Karasu meaning “crow” in Japanese was one of the initial species of Koi produced.  The normal coloration of the Karasu is a fish that has both black fins and a black body but with a variation that can also have a white or orange belly. 

Environment and diet have a tendency to change the colour of the Koi.  The variations will make the fish appear a duller or brighter shade of pigmentation. Matsukawabake Koi has the adeptness to change colours.  It’s a Koi that is black in colour and has patches of white on its body.  One of the amazing things about this Koi is that it can completely change its color according to the temperature of the water or the seasons of the year.  This fish can actually change from totally black to totally white, but when the conditions return back to normal so will its original patches and colours.

A more recent Black Koi species the Kumonryu first appeared in the 1980s.  It’s the most popular Black Koi species and the name means Dragon Fish.  This species received its name, because of the similarities of the bodies of dragons depicted in ancestral paintings.  They also have the ability to change colours, like other species of Koi.

Koi come in a large variety of colours, and owning and raising these fish with the chameleon like ability of changing colours before your eyes, pond owners are naturally attracted to these beautiful fish.  All of the above species of Koi would make a beautiful addition to your new fishpond.

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Source by Jack Fromwell

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