The Essential Book of Koi combines research from leading international authorities on koi with the captive-care techniques of experienced aquarists to yield the most up-to-date and extensive book available on the science, care, and breeding of these large ornamental fishes. This cutting-edge guide discusses topics that are imperative for sustaining a thriving family of koi, including how to create and maintain the best water quality, how different filtration systems work, the biology of koi and how to keep them in good health, and detailed information on feeding, buying, and showing. It also provides important details on the breeding of koi, a serious and rewarding pastime for many aquarists, and explains how koi are bred commercially as well as getting started at home. The fact-filled text is complemented by vivid, brand new photographs that detail the seemingly endless color variations of koi. Whether you are a hobbyist looking to show or breed koi in your pond, or you simply want to admire these fishes, The Essential Book of Koi is an excellent guide to these wildly popular fishes that enhance the visual enjoyment of both indoor and outdoor ponds.
A good, comprehensive overview of everything a beginning koi-keeper needs to know and then some. Although I checked this out to learn about various patterns, it starts out with how to build your pond, things to consider (distance from house, depth and materials needed, filtration and substrates, etc.), then followed by the nitrogen cycle and other parameters to keep an eye on. Foods are discussed, as well as most diseases you'd be likely to come across. If I were actually to set up a pond, this book has plenty of information.
The second, smaller half discussing patterns and varieties is discussed from a showing perspective- what makes a good quality sanke or kin-gin-rin, and what categories would some fish fall into depending if they were at a Japanese or Western show? May not be as useful for the hobbyist not going into shows, but I found it fascinating.