Koi Pond Books and DVDs » Books on Koi » Koi Volume 1

Koi Maintenance - Water chemistry, pathogen pressure, and nutrition.

Koi - Sexing, judging, size and age, methods of rearing, color, and skin quality.
Gosanke Varieties.

The book goes into great detail discussing and providing photographic examples of sahi and kiwa, skin quality, growth and development, origins, bloodlines, and body forms for all the gosanke varieties.