Koi Fish Information
Koi Fish Guide. Whilst the potential color variations are never ending, breeders have identified and named a number of particular categories. The most trendy group at the moment is Gosanke, which is made up of the Kohaku, Taisho Sanshoku, and Showa Sanshoku varieties.The common carp is a tough little fish, and koi maintain that durability. Koi are cold-water fish, but benefit from being kept in the 15-25 degrees C (59-77 degrees F) range and do not react well to lengthy cold winters, their immune system switches off under 10 degrees Celsius.

































