Oranda, Black Moor, Ranchu, Lion Head, Ryukin and much more. Since the domestication of goldfish, about 4000 years ago, man has produced a myriad of varieties with the most disparate shapes and colors, through selection. Beautiful and exotic breeds but whose care presents an additional challenge for every aquarium and especially for the less experienced.; history, characteristics, needs and advice about the most popular breeds of fancy goldfish.