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Description
Utsurimono Japanese Koi Carp Cyprinus CarpioUtsurimono Japanese Koi Carp Cyprinus Carpio Shiro Utsuri (SHEE roh OOT soo ree) koi have a sumi (black) body with a shiro (white) pattern over the top. The pattern of a Shiro Utsuri koi is often described as a checkerboard with its alternating sections of sumi and shiro. The variety is quite a simple variety compared to, say, a Goshiki but its simplicity is often one of the main attractions. The sumi and shiro provide a beautiful and dramatic
Utsurimono Japanese Koi Carp Cyprinus CarpioShiro Utsuri (SHEE-roh OOT-soo-ree) koi have a sumi (black) body with a shiro (white) pattern over the top. The pattern of a Shiro Utsuri koi is often described as a checkerboard with its alternating sections of sumi and shiro. The variety is quite a simple variety compared to, say, a Goshiki but its simplicity is often one of the main attractions. The sumi and shiro provide a beautiful and dramatic contrast that always stands out and is often visible from quite a distance!
The first Shiro Utsuri koi were bred in the late 1920s, but it is unknown exactly how they were bred and what they were bred from. The most common theory involves the Shiro Bekko koi variety which is a white koi with black patterns as this is the reverse of a Shiro Utsuri koi, which is a black koi with white patterns. However, this is just a theory, and the truth is, and likely always will be, completely unknown! All we do know is that the Shiro Utsuri was first shown to the koi keeping hobby in 1931 and very quickly became a very popular variety with a massively high demand for the variety.
Due to this popularity of the Shiro Utsuri koi and its relative easiness to breed in comparison to the Ki Utsuri and the Hi Utsuri, many breeders have invested a lot of time and effort into refining and improving the Shiro Utsuri variety. Ever since the first generations of Shiro Utsuri koi, breeders have been working to develop and perfect the Shiro Utsuri by improving the quality of the pattern and the colours. Unlike the Hi Utsuri and the Ki Utsuri, a Shiro Utsuri koi can be bred from two Shiro Utsuri parents (breeding two Hi Utsuri or two Ki Utsuri koi results in very poor quality, muddy-looking koi without any of the beautiful Utsuri patterns). Therefore, selective breeding can be used to improve the general quality of this variety. This process involves taking the two nicest parent koi and breeding them to create fry who are generally of equal quality to the parent koi. Some of these fry will be of worse quality than the parents and others will be of higher quality than the parents and these higher quality koi are then chosen to be bred together to create the next generation. This results in each generation being generally higher quality than the previous, thus slowly improving the variety.
These improvements have meant that Shiro Utsuri have become a very competitive koi, often receiving titles and awards at koi shows ever since 1991 when the variety was first entered. In Japan, koi shows are often held indoors, and this means that Shiro Utsuri koi do particularly well because the artificial lighting really makes the contrast of the sumi and shiro colours stand out. However, the Shiro Utsuri were never considered for the biggest prizes or the championship titles because they had one major disadvantage compared to the Gosanke koi and that was size. The Shiro Utsuri is quite a small variety compared to Gosanke and Chagoi koi, with the koi often reaching no more than 90cm in length.
By selectively breeding for size as well as quality, the Omosako koi farm was able to produce the first Shiro Utsuri over 100cm. In fact, this koi then went on to win the championship title at the All-Japan Koi Show in 2013 and became the first Champion Shiro Utsuri. Since then, Omosako have had a very strong presence at koi shows with Shiro Utsuri and are considered to be the best breeder of Shiro Utsuri koi in the world.
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4.0 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Finally, a ball that made it!
Color: Blue, Color: Blue
I don’t know what is it with this ball, but it’s special. My dogs can absolutely tear up anything and this one seems like it can be chewed up but my dog loves it too much. He carries it all day, nibbles it and loves the squeaky sound of course. Finally found a winner!
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Good size ball for my big boy
Color: Purple
My big boy loves this ball. He chews and chews and chews on it and it ain't made a dent in it. It's made a good quality rubber. It's got a squeaker in it. He hasn't managed to get it out which is not normal because normally he can get a squeaky out within 10 minutes. He goes through toys like I don't know what so it's being being a good. Really good ball. We've had it for about 2-3 months now and he hasn't been able to break into it and get squeaky out or even make a dent into it. That would tear up the the rubber
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Sturdy ball, holding up well.
Color: Purple
I have a ball obsessed Shih Tzu. This has become his security blanket. He literally takes it everywhere and even sleeps with it next to him. Dexter loves any ball. All shapes and sizes. He will play fetch all day long if you let him. He doesn't know when to quit. It can be 100 degrees out with 80% humidity and he'll fetch all day long.
This is a larger ball, I think just over 3 inches. It is entirely too big for a Shih Tzu, but it is perfect for Dexter. He came to us with a ball similar to this that he has since lost. He carries it in his mouth by placing his incisors in the indentations and lets it hang out the side of his mouth. Quite comical actually, but it works for him. We have bought him balls more for his size, but they're too small and he gets them lost under cabinets, furniture or any nook and cranny the ball will fit. And being obsessive, he will bark and carry on because he can't get to the ball until you come and rescue it. Difficult on our old knees. So he ends up getting the smaller balls taken away from him.
The other night he was laying and chewing on this ball. It sounded like he was shredding this ball to pieces. I was afraid he would choke or swallow the rubber pieces, so I took it away from him. There wasn't anything wrong with the ball. It looked brand new. No chew or bite marks that I could see. I was impressed.
It does have a squeaker, but I can barely get it to squeak and I have strong hands. A larger dog with a stronger bite force could probably easily make it squeak.
It claims to have a beef scent to the toy, and maybe that is why he likes the ball so much. But I sniffed it and couldn't smell anything, which is fine by me, it won't have an obnoxious smell to where I don't want it around me.
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Reviewed in the United States on December 7, 2025
★★★★★ 5
Dogs love balls
Color: Orange
Most dogs love to play with balls. This is a ball.
It squeaks and can handle a lot of strong chewing. Quite durable and a good size for medium and up sized dogs. (Honestly even smaller dogs would have fun with this).
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Good quality
Color: Green and Purple
Good quality and last long. Is loud wheen squeeks
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Reviewed in the United States on May 16, 2026
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