• Archives

  • Categories

  • Pages

  • Follow me on Twitter

I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger? | Decorative Ponds & Water Gardens Q & A

Q: I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger?

Q: I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger?

Jeri – Hartsville, SC

A:  It’s easy to spend hours online ogling champion koi. The fishes’ near-perfect silhouettes, vivid color palettes and balanced scale patterns – not to mention their healthy size – inspire hobbyists to go on their own quests for the Holy Grail of pond fish. So they search pet store aquariums. They peruse tanks at their local pond supplier. They even eye their friends’ fishes, finding themselves coveting a golden butterfly or a sparkly gin rin kohaku.

Does this sound familiar?

Unfortunately, championship-quality koi are rare, as are some of the hard-to-find varieties. The good news, however, is that all koi are unique, and each variety has its own distinct color combination, scale pattern and physical characteristics. They’re called “living jewels” for a reason!

Read on to learn more about the different koi varieties – and how to find the exceptional ones.

Colorful, Common Koi

Most pet stores and pond supply shops stock the most popular varieties of koi, including these, below.

  • Kohaku: These fish have a solid white body overlaid with large red markings (hi). Top quality Kohaku display a bright, blemish-free white combined with deep, vibrant red patterns that are evenly distributed along the body.
  • Sanke (Taisho Sanke): These koi look similar to Kohaku, but they also have small black markings (sumi) overlaid on its white base. Experts say a high quality Sanke pattern begins with a great Kohaku pattern, to which the black is a welcome complement.
  • Showa (Showa Sanshoku): Commonly known as Showa, these fish have a solid black body that’s topped with red and white (shiroji) markings. Showa can be confused with Sanke; the difference is that in Showa, the black patterns wrap all the way around the body and appear on the fish’s head. The red, white and black should be evenly balanced, with crisp, clean edges between each color.
  • Ogon: Their metallic scales are in one solid color, typically yellow (Yamabuki Ogon) or white (Platinum Ogon). A clean solid-color head and unblemished body are crucial to a high-quality Ogon.

Exceptional Specimens

If you want to add some rarely seen jewels to your pond, check out these varieties below. Though you may find them at your local retailer, you’ll have better luck sourcing them via online vendors and koi auctions.

  • Shusui: Shusui are the scaleless (doitsu) version of Asagi, which are koi that display a blue net-like pattern on the back that’s complemented by red or orange patterns on the body. In Shusui, the blue net pattern is replaced by a single row of scales along the dorsal line at the top of the back.
  • Kumonryu: Another scaleless variety, Kumonryu have patterns of grey or white combined with black. They will completely change their pattern many times throughout their life. They can go anywhere from solid white to solid black, or any conceivable combination in between.
  • Tancho: Tancho is a popular variation of Kohaku, in which the only red pattern appears as a single red dot on the head. The symmetry and placement of the Tancho mark are main factors in determining the quality of any particular koi.

Whether choosing a common or uncommon variety, look for bright colors, crisp edges and interesting patterns. The koi’s color vibrancy and pattern edges will change over time (dramatically, in the case of the Kumonryu!), but its variety will stay the same; a Kohaku, for instance, won’t change into a Showa.

Nutrients in your koi’s food can affect its color display, so be sure to feed them some Growth & Vibrance Fish Food after transitioning them from their wheatgerm-based Spring & Fall Fish Food. It contains spirulina and stabilized vitamin C for show-stopping color.

Pond Talk: What types of koi do you have in your pond? Do you have a showstopper swimming among them?

Easy to Digest Wheat Germ Formula - The Pond Guy® Spring & Fall Fish Food

 

Enjoy this article?
Join over 60,000 fellow pond owners and receive our Weekly Pond Talk every Saturday.

 

I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger? | Decorative Ponds & Water Gardens Q & A

Q: I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger?

Q: I see unique koi online but I can’t find them at the pet shop. Do they only sell certain ones, or do they change when they get bigger?

Jeri – Hartsville, SC

A:  It’s easy to spend hours online ogling champion koi. The fishes’ near-perfect silhouettes, vivid color palettes and balanced scale patterns – not to mention their healthy size – inspire hobbyists to go on their own quests for the Holy Grail of pond fish. So they search pet store aquariums. They peruse tanks at their local pond supplier. They even eye their friends’ fishes, finding themselves coveting a golden butterfly or a sparkly gin rin kohaku.

Does this sound familiar?

Unfortunately, championship-quality koi are rare, as are some of the hard-to-find varieties. The good news, however, is that all koi are unique, and each variety has its own distinct color combination, scale pattern and physical characteristics. They’re called “living jewels” for a reason!

Read on to learn more about the different koi varieties – and how to find the exceptional ones.

Colorful, Common Koi

Most pet stores and pond supply shops stock the most popular varieties of koi, including these, below.

  • Kohaku: These fish have a solid white body overlaid with large red markings (hi). Top quality Kohaku display a bright, blemish-free white combined with deep, vibrant red patterns that are evenly distributed along the body.
  • Sanke (Taisho Sanke): These koi look similar to Kohaku, but they also have small black markings (sumi) overlaid on its white base. Experts say a high quality Sanke pattern begins with a great Kohaku pattern, to which the black is a welcome complement.
  • Showa (Showa Sanshoku): Commonly known as Showa, these fish have a solid black body that’s topped with red and white (shiroji) markings. Showa can be confused with Sanke; the difference is that in Showa, the black patterns wrap all the way around the body and appear on the fish’s head. The red, white and black should be evenly balanced, with crisp, clean edges between each color.
  • Ogon: Their metallic scales are in one solid color, typically yellow (Yamabuki Ogon) or white (Platinum Ogon). A clean solid-color head and unblemished body are crucial to a high-quality Ogon.

Exceptional Specimens

If you want to add some rarely seen jewels to your pond, check out these varieties below. Though you may find them at your local retailer, you’ll have better luck sourcing them via online vendors and koi auctions.

  • Shusui: Shusui are the scaleless (doitsu) version of Asagi, which are koi that display a blue net-like pattern on the back that’s complemented by red or orange patterns on the body. In Shusui, the blue net pattern is replaced by a single row of scales along the dorsal line at the top of the back.
  • Kumonryu: Another scaleless variety, Kumonryu have patterns of grey or white combined with black. They will completely change their pattern many times throughout their life. They can go anywhere from solid white to solid black, or any conceivable combination in between.
  • Tancho: Tancho is a popular variation of Kohaku, in which the only red pattern appears as a single red dot on the head. The symmetry and placement of the Tancho mark are main factors in determining the quality of any particular koi.

Whether choosing a common or uncommon variety, look for bright colors, crisp edges and interesting patterns. The koi’s color vibrancy and pattern edges will change over time (dramatically, in the case of the Kumonryu!), but its variety will stay the same; a Kohaku, for instance, won’t change into a Showa.

Nutrients in your koi’s food can affect its color display, so be sure to feed them some Growth & Vibrance Fish Food after transitioning them from their wheatgerm-based Spring & Fall Fish Food. It contains spirulina and stabilized vitamin C for show-stopping color.

Pond Talk: What types of koi do you have in your pond? Do you have a showstopper swimming among them?

Promote Growth & Intensify Colors - The Pond Guy® Growth & Vibrance Fish Food

I just saw my favorite koi. He used to have black spots – but where did they go? | Decorative Ponds & Water Gardens Q & A

Q: I just saw my favorite koi. He used to have black spots – but where did they go?

Q: I just saw my favorite koi. He used to have black spots – but where did they go?

George – Price, UT

A: Koi aficionados call their fish “living jewels” for a reason. With their rich red, brilliant white, velvety black and shimmering metallic scales, these swimming beauties resemble vibrant precious stones that glisten and glimmer as they glide through the water.

Colorful, Dynamic

Thanks to generations of careful breeding practices, koi hobbyists have developed more than 20 varieties of nishikigoi (brocaded carp) that differ by their scale color and pattern. Some of the stand-out types include:

  • Kohaku: White body topped with large red markings.
  • Sanke (Taisho Sanke): Similar to the Kohaku but with the addition of small black markings called sumi.
  • Showa (Showa Sanke): Black body topped with red (hi) and white (shiroji) markings.
  • Ogon: Metallic scales in one solid color, usually orange, white, silver or gold.

A koi’s color pattern is dynamic through its entire life; the colors and markings change as the fish grows in size and loses and regrows its scales. For instance, a black spot on your Sanke’s back may seem to shrink or disappear beneath its red markings – only to return a year later in a morphed size or shape.

Bring Out the Brilliance

Though it’s part of a koi’s DNA to change its spots, environmental factors can cause modifications as well. Poor water quality, parasites and fungal infections, for example, may fade scale color. Insufficient sun exposure during the winter months, too, may cause colors to wane. But once the water quality is back up to par and sunless sky gives way to bright sunshine, those brilliant colors will return.

On the flip side, some external factors can actually enhance a koi’s color. Fresh vegetables and citrus fruits, like green peas, oranges and grapefruit, can bring out the vibrant red and orange tones, brighten the whites and deepen the blacks. You can also find commercial diets that are packed with ingredients, like vitamin C and spirulina, formulated to boost color.

Summer Color

As warmer weather approaches and your fish start to get hungry again, start them off with an easy-to-digest wheat germ diet, like The Pond Guy Spring & Fall Fish Food, followed by a higher protein, color-enhancing diet, like The Pond Guy Growth & Vibrance Fish Food. Also test your water quality and do what’s necessary to make sure it’s the best it can be. In time, you’ll likely see your koi’s black markings return – or change into something completely different!

Pond Talk: What changes have you seen in your koi’s color and markings?

Perfect for Cool Weather Feeding - The Pond Guy® Spring & Fall Fish Food