Doitsu High Quality Koi, Japan Strain
The Doitsu High Quality Koi, Japan Strain is a beautiful koi with contrasting scale patterns. A distinct arrangement of large, mirror-like scales along the back (dorsal line) or sides (lateral line) distinguishes the Doitsu Koi from fully scaled Japanese Koi. For this reason, the Doitsu Koi is sometimes called the Mirror-scale Koi. Originally imported to Japan from Germany, the Doitsu Koi went through centuries of selective breeding and is now available in an impressive array of color patterns.
The Doitsu Koi we offer are rated by breeders as AAA Grade Select – the highest rating these fish can receive. They are produced by some of the best brood stock in Asia. While Japanese koi can live longer than 200 years, their typical life span is 25 to 35 years.
| Features | Details |
|---|---|
| Scale Pattern | Mirror-like scales on dorsal or lateral line |
| Breed Rating | AAA Grade Select |
| Origin | Germany, selectively bred in Japan |
| Typical Lifespan | 25 to 35 years |
FAQ
What makes the Doitsu Koi different from other Japanese koi?
The Doitsu Koi is distinguished by its mirror-like scale pattern along the back or sides, which sets it apart from fully scaled Japanese koi. This unique feature is known as the mirror-scale trait.
What is the breed rating of these koi?
These koi are rated as AAA Grade Select, the highest rating given by breeders for this strain.
Where are the Doitsu Koi bred?
Originally imported from Germany, the Doitsu Koi has been selectively bred in Japan for centuries and is now produced by some of the best brood stock in Asia.

Irene Springer –
The Doitsu koi is stunning with its clear mirror-like scales. It stands out in the tank and has a calm, graceful movement. The fish appears healthy and active after a few weeks in the aquarium.
Isaac Welch –
I bought this koi for my home pond and it has become a centerpiece. The scale pattern is very distinct and beautiful. It’s easy to care for and adapts well to the water conditions.
Carol Ince –
The fish looks exactly as described. The mirror scales are visible and the coloration is vibrant. It’s a bit more active than other koi I’ve had before, which is a positive.
Theresa Skinner –
Highly recommended. The AAA grade quality is evident in the fish’s health and appearance. It’s a great addition to any koi collection and maintains its beauty over time.