Classic English Ghost Koi (Cyprinus carpio). The Ghost Koi is a cross between a Mirror (Doitsu) or Common Carp and a Yamabuki Ogon to make the classic Ghost as pictured. The term Ghost Koi appears to now be used as a general catagory for low grade metallic Koi. But these are the originals!
Ghost Koi often become the biggest fish in the pond and have an appetite to match!
This is for a Doitsu (Mirror Carp pattern) Ghost Koi at 8-10″