Ranchu - The most obvious feature of the Ranchu profile is the arched back, deep tail tuck, stubby fins & egg shaped body.
The Ranchu, is a hooded variety of fancy goldfish developed in Japan. It is referred to as the "king of goldfish" by the Japanese. This breed has also been historically referred to as the Maruko or Corean Goldfish.
This breed of fancy goldfish comes in a wide variety of colors including solid red, red and white, black, blue (0r silver), bi-colored, calico, nacreous or matte, solid white and others.