The shubunkin, are similar to the common goldfish and comet goldfish in appearance. They were first bred in Japan, from mutations in telescope eye goldfish (Demekins) c. 1900.
They have streamlined bodies with well-developed and even fins. However, the shubunkins are calico goldfish; they possess nacreous scales (a mix of metallic and transparent scales that are pearly in appearance). The overlapping patches of red, white, blue, grey and black (along with dark speckles) normally extend to the finnage of shubunkins.