Keeping koi (often called "living jewels") in top-quality condition takes dedication and year-round care, but it is a challenge that thousands of koi enthusiasts are happy to accept in pursuit of perfection. They are a fiercely devoted group willing to spend hundreds, sometimes thousands of dollars to nurture, show and build their collection. Written by a team of international experts, "Koi: A Complete Guide to their Care and Color Varieties" contains information and advice that incorporates the latest developments in koi research. Topics include: Purchasing koi Body conformation, deportment, color, pattern, and quality The koi pond, including technology, like de-icers and warming tents Water quality and filtration Koi physiology, disease prevention, and good nutrition Showing koi, how to achieve optimal health, color and shine Breeding Designing and building a pond Identifying the many varieties of koi. This book fulfils the need for a reasonably priced and up to date, expert guide on keeping koi. It is essential selection for all enthusiasts, from excited beginners to koi kichi ("koi crazy").