Koi have many different colors. Some of the major colors are white, black, red, yellow, blue, and cream.
As Nishikigoi were developed in Japan, the language of Nishikigoi is Japanese. Japanese is used not only to name the varieties, but also for many of the terms used to describe their colors and traits.
While possible variations are limitless, breeders have identified and named a number of specific categories. The most popular category is Gosanke. The Gosanke category is made up of the Kohaku, Taisho Sanshoku, and Showa Sanshoku varieties. The Japanese breeders have many generations of knowledge and experience when it comes to breeding and raising Nishikigoi.
For many of us, our ponds are beginning to warm (or will soon be). Water temperature, not the ambient air temperature, is the gauge for what to do and when to do it in regards to your pond. Water temperature should be checked at approximately 1 foot of depth. Avoid feeding your fish until the water temperature is consistently above 50 degrees Fahrenheit. This will also be the time to start adding spring maintenance bacteria and enzyme treatments.