Generally, the fish that can be mixed with golden koi include scavenger, goldfish, grass gold, golden crucian carp, etc. If you are some very experienced gold koi breeders, you can also mix gold koi with map fish and arowana.

When choosing fish to be mixed with golden koi, be careful not to pick some more lively ones, which will easily bully golden koi. It is necessary to pick some mild and gentle fish in order to live in peace with the golden koi.