Japanese Showa Koi are currently sold and raised a lot in Vietnam, but the formation, development as well as how to distinguish and nurture this fish breed is not well understood by all players.

1. Origin of Japanese Showa Koi
Koi is a Japanese word that means "carp." These wild ordinary gray fish have been domesticated for use in ornamental ponds and backyard water gardens.

They are rightly called ?Nishikigoi? or ?brooch carp?, known and appreciated by fish enthusiasts for their striking color variations.

The Japanese Showa Koi, also known as the Showa Sanshoku, is a member of the ?Gosanke? category of ornamental koi fish and is prized for its balanced pattern and sharp coloration.

Showa refers to black koi (Black Sumi) with red (Hi-meaning red) and white (Shiro) markings. Showa was created by crossing the Kohaku Koi with the Shiro Utsuri breed. First produced in 1927, the Showa Koi is named for Emperor Showa, who was in power during that time.

Initially, there was a different ratio of red (Hi) and white (Shiro) patches on this type of Koi. Over the years, however, the number of white patches has increased to the point where it has become difficult to distinguish the Showa from the Sanke variety.

Buyers should consult an experienced and skilled breeder or dealer when choosing to purchase a Showa, as less knowledgeable breeders often confuse the two.

A good Showa should have a nicely balanced pattern as well as sharp edges to separate the colors. Showa Koi fish, well suited to create a vibrant and artistic atmosphere in the aquarium.

Showa Koi is a hardy fish and does well in most ponds. Showa Koi are available from many different breeders and dealers, it is important to check their reputation before setting your heart on this type of Koi. Good blood flow will ensure the fish keep its color for a long time.


2. Japanese Showa Koi varieties and how to identify them
Although all Showa must possess black skin (called Sumi) covered with red to orange red (Hi) and white (Shiroji) markings on it, there are many different varieties of Showa including different patterns and arrangements.

Showa can sometimes be confused with Koi Sanke. The main difference is that the Koi Sanke has a white base skin with dark spots that do not extend below the lateral line or on the head, while the Showa has black skin that appears through the white and red patches.

The Sumi soles on the Showa appear more like thick bands than spots (though spots are not uncommon). These Sumi bands and spots may extend past the lateral line and to the head.

Showa may also have black spots or rays on the pectoral fins, known as motogoro, while Sanke will usually have all white fins or will have some Sumi stripes (not spots) on the fin(s).


2.1 Identify Japanese Showa Koi by body traces
2.1.1 Koi Hi Showa
Hi Showa is mostly red, with a large amount of Sumi appearing and very little, if any, white. All the reds must link together, like the big islands.

2.1.2 C? Koi Kindai Showa
Kindai Showa c? m?u trắng chủ đạo (40% trở l?n), tất cả đều được kết nối. C? thể c? số lượng Hi v? Sumi kh?c nhau.

2.1.3 Koi Show old style (old style showa)
The old Showa styling is, as can be inferred, one of the original Showa bloodlines. These Showa are mostly black with very little white, with red being the secondary color. Typical standards to follow are 40% black or more, 40% red or less, and 20% white or less.

2.1.4 Koi Doitsu Showa
Doitsu Showa can be any of the above (or a combination thereof), except they are Doitsu. This means that koi actually lack scales, aside from some broad scales along their lateral line and dorsal fin.

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