Live koi fish 12-13" Sanke Red-Black-White Koibay

This is the best known Koi color; the fish is red and white, and that is the meaning of its name.
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Ulcer disease is a particularly destructive bacterial disease. Seen on koi and goldfish, it starts out as a red or white pimple and quickly widens into a large hole or ulcer. It can advance all the way into the muscle of the fish. It is very important to catch this disease in its earliest stages.
Live koi fish 9" Lemon Hariwake Yellow-White Koibay
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As you know, there are LOTS of other things that affect the quality of the white. The biggest is Nitrates. If you can keep Nitrates down below 5ppm, then any yellowing of the skin is coming from another problem. Koi that have been sick, and have compromised liver or kidneys become yellow. Color foods generally make whites look pink in my experience. I associate yellows mostly with poor genetics. When young Koi become mature, and they spawn for the first time, I always find they look better the following year after the spawn. The eggs and sperm seem to collect unwanted pigment from the rest of the Koi, and once the Koi has spawned, the Koi is left much whiter. Egg-bound females are almost always yellowish... Water changes seem to have the biggest affect on whites - because of the nitrate reduction. Plants also reduce nitrates - but somehow, Koi in plant ponds never look as good as those in ponds with massive water changes... Koi in mud ponds with green water usually have awesome colors - especially red - from all the algae. Whites can look awesome in mud ponds, or not - I suspect it depends on the water chemistry. And last, stress really affects how Koi appear... Some fish stress when you look at them! LOL Some have compromised genetics so their organs never grow properly, and they die before they are 6 - meanwhile their whites appear yellow. 5-6" CHAGOI Butterfly Live Koi Pond Fish Koibay Long White Fins
Photo provided by FlickrLive koi fish 9-10" Kohaku Butterfly Red white Long Fins - Koibay
Photo provided by FlickrBlue koi fish It looks like blue and white china.
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Symbols of strength and masculinity in Japan, Koi are know there as the "warrior's fish". Each year in the month of May, beautiful koinobori (streamers) in the shape of Koi are flown form poles in celebration of the Boy's Day Festival. The streamers symbolize the Japanese parents hope that their sons will demonstrate courage and strength, like that of the nishikigoi. The koi fish is a popular symbol for the family, - black koi for father, flame red koi for mother, blue and white for boy, and pink and red for girl.varieties of domesticated common carp that originated in Japan. They are kept for decorative purposes in outdoor ponds with very clean, oxygenated water and plenty of shade (the fish are susceptible to sunburn!). There are over 100 varieties of koi, which can be red, white, black, yellow, brown, gray, and green, and many combinations thereof. Koi resemble oversized goldfish and, in fact, koi and goldfish are both types of carp. There are many Koi varieties available with some fetching ridiculous prices. The names of various koi are based on the patterns and colors exhibited by the fish. The Tancho variety is highly sought after having a primarily pure white body with an orange colored pattern on the top of the head. It is a beauty.Milky White Koi Carp Fish are a large group of fish originally found in Central Europe and Asia. Various carp species were originally domesticated in East Asia, where they were used as food fish. Carp are coldwater fish, and their ability to survive and adapt to many climates and water conditions allowed the domesticated species to be propagated to many new locations, including Japan. Natural color mutations of these carp would have occurred across all populations. Carp were first bred for color mutations in China more than a thousand years ago, where selective breeding of the Prussian carp (Carassius gibelio) led to the development of the goldfish.