Demekin - In Japanese, "Deme" is a short nickname for Popped Eye and "Kin" is of course short for "Kingyo" which means goldfish. A cross between a blackmoor (Telescope Eye) and a ryukin. The demekin has pop eyes and overall bigger more solid body and a high curved back. The tail should be split and can be of different lengths.
It is one of the more rounded or egg-shaped fancy goldfish. This rounded shape is enhanced by large bulbous eyes protruding from the sides of its head Its colouring is a deep, velvety black, and more recently calico or tri colored.
This created a deeper, stocky body and shorter tail. These make fine pond fish with very solid black. They are extremely cold hardy.