The whole breeding craze started in Japan during the 1800's.
Back then only two colors were bred.
A century later, more colors became available and continue to increase up to the present day.
Koi eventually won the title for being the most beautiful fish in the world.
The colors are red, white, black, yellow, blue, gray, and green.
But the most famous of them is the white.
Growing kois is an expensive affair.
The pond alone has to be wide and deep enough to cater to a certain number of koi population.
Other requirements include location, security, and devices that regulate the environment of the pond to ensure the kois grow in the best way possible.
Kois grow up to 3 ft so for serious growers, they need a serious pond to grow them in.
A fish tank will not suffice unless it is big enough for the koi to swim and grow in.
Even though kois don't school much, it's the size of each one that has to be taken into consideration.
Necessary consideration with the location must be taken to avoid Koi Pond Algae from growing as well.
The white koi is known for its visibility in murky waters.
It's body is attractive due to the trait of being quite reflective.
Kois under this category are the: sanke, kohaku, beko, and ogon.
The only kois considered to be true white kois are probably the sanke and the kohaku because of having colored markings against the white background.
But the bekko and ogon are not totally white making them similar to other breeds.
As for kohakus, 50 to 70 percent of their bodies are covered in red markings while the sanke is covered in black and red markings against a white background.
There is a set of standards that koi enthusiasts follow in order to determine the kind of koi and these are the criteria.
The markings have to be of a particular color.
In the case of a kohaku, red.
The sanke has to be red and black.
Again in case of a kohaku, its body has to have markings and these markings must cover at least half to 70% of its body.
The rest should be pure white.
The colors must follow a symmetrical pattern.
When being observed, the colors on one side should reflect at the opposite side.
The color should be as deep as possible.
A light color hue means the fish has a defect.
Color edges have to be clear especially on edges where the colors meet with the white background.
Since it's a fish, it should be covered in scales.
A koi that does not meet these standards for a white koi is disqualified.
They are considered defective and not pure in breed.
Only a few breeders know this fact and this had resulted to the breeding of unqualified white kois.
Since kois are popular, these fishes are expensive but they make excellent pets to decorate the yard.
These also make as excellent food source as well as income source for fish farmers.