Variants
Related fish include the entire "telescope" family, and can appear in red, red-and-white, calico, black-and-white, chocolate, brown, blue, bronze, lavender and chocolate-and-blue, tricolored, and black coloration. Black moors with a deep solid black color are difficult to find but are more stable in moors than any other goldfish variety. Black-and-white moors are known as panda moors.
It was once theorised that blackness in goldfish are only exhibited by the telescope-eyed goldfish and that the black color is only a permanent fixture with telescope eye goldfish. However, with the recent entry of black lionheads (ranchus), black orandas, black pearlscales and black hibunas, this view is no longer true.
In fact, black moors do sometimes throw normal-eye offsprings, and they are black also. However, they are rejected as they do not conform to the telescope eye feature for the Moor variety.
In 1941, Moscow aquarist P. Andrianov, bred a kind of black telescope with a ruby-red eyes.
In addition to "moors" there are black Demekins. Moors are more torpedo shaped and have long flowing anal, pectoral and tail finnage. Black demekins have shorter fins and deep bodies top to bottom. Here is summary. http://weloveteaching.com/puregold/moor-vs-demikin.html
Read more about this topic: Black Moor
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