Basic
Will a 3-Year-Old, 80 cm Koi Definitely Grow Very Large in the Future?
Not necessarily. While many koi from superior bloodlines can reach 80 cm in length by age 3 under ideal conditions—such as low stocking density, high dissolved oxygen, a consistent water temperature around 25°C, and ample feeding—the ultimate maximum size of a koi is determined primarily by its genetics. Excessively rapid...
At What Size Is It Easier to Judge a Koi's Body Conformation?
Experienced koi breeders, with knowledge of the parent fish lineage, can often detect differences in body conformation even at the small tosai (first-year) stage or during the initial culling of fry. For seasoned koi enthusiasts, a reasonable assessment of body shape may be possible when the koi reaches about 35–40 cm...
Can Misaligned Scales on Koi Be Surgically Corrected?
Given the current level of koi surgery technology, misaligned scales generally cannot be corrected through surgical intervention. Therefore, please check all aspects carefully when making your selection.
Can a Koi's Pectoral Fin Heal if Split?
Yes, a split pectoral fin can heal. If the split is not severe, it will typically mend on its own. However, for a severe or deep split, intervention is needed. In such cases, a small splint (e.g., made from a toothpick) can be used to support the fin, and the...
What Causes Color Fading (Loss of Red Pigmentation) in Koi?
Color fading, or the loss of red pigmentation, is a common occurrence in koi keeping. Numerous factors can cause it, with genetic lineage being a significant and influential one. Other contributing factors include treatments for illness (such as adding salt), stress from water changes, and excessively rapid growth. The root...
The "Big Three" Varieties of Koi
In Japan, the three varieties — Kohaku, Taisho Sanke, and Showa Sanshoku — are commonly referred to as "The Big Three" (also known as "The Great Three"). In China, Taisho Sanke is usually called "White-based Sanke", and Showa Sanshoku is called "Black-based Sanshoku". These three varieties are the most fundamental...
Recent Post
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Can a Koi's Pectoral Fin Heal if Split?
Jul 05, 2025 -
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The "Big Three" Varieties of Koi
Jul 01, 2025
