Three Koi Sick

Three Japanese Koi keep laying on there side as if there dead. All other fish common carp and Koi all ok. Japanese koi losing the bright color but are still feeding ok. - Martin

Sounds like your new Koi are sick. Koi loose their color when they get an infection. You need to get in touch with a veterinarian that specializes in Koi health. They will be able to diagnose what is wrong with your Koi.