[1][2][3] It was first developed in the early 1700s in China, where the trait was referred to as dragon eyes.

Except for its enlarged projecting eyes, the demekin is similar to the ryukin and fantail.

Demekins are available in red, red-and-white, calico, black-and-white, chocolate, blue, lavender, kirin, chocolate-and-blue and black coloration.

They can grow up to a length of 4-10 inches, but may lose their velvet-like appearance with increasing age (lifespan: 6 to 25 years).

These fish can range in coloring anywhere from a lighter grey to a dark black, but most young goldfish do not stay pure black forever, and many of them change from a rust-colored underbelly to orange splotches.

However, they are often culled as they do not conform to the telescope eye feature for the moor variety.

Goldfish are typically easy to care for, and black moors in particular are able to withstand a wide variety of temperatures.

In 1941, Moscow aquarist P. Andrianov bred a kind of black telescope with orange-red eyes.

Young moors resemble bronze fantails and their protruding eyes gradually develop with age.