The most beautiful and withal costly fishes in the world come from China, and of these the most expensive and rarest is the brush-tail goldfish. Specimens of these have sold for as high as $700 each, and in Europe the prices range from $250 to $500. The brush-tail goldfish is so small that a half-crown piece will cover it, and probably there is no living thing of its size and weight that is worth so much money.