351 pages dedicated entirely to the study of Gosanke varieties -origins, skin quality, growth development and characteristics of certain bloodlines.
Koi – sexing, judging, size and age, methods of rearing, colour, 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.
Breeder sections include a detail history and description of production values for breeders in Nagaoaka, Ojiya, Uonuma, Isawa, Fukui, Hiroshima, and Fukuoaka regions. Just a partial lists includes Maruboshi, Hasegawa, Isa, Torazo, Shinoda, Izumiya, Hoshikin, Oomo, Maudo, Jinbei, Tanaka, Shintaro, Murata, Matsunosuke, Kachi, Sakai, Ueno, and Ogata.
In-depth explanations about Koi care and health, water chemistry, nutrition, etc.