观赏鱼具有悠久的养殖历史,其品种极为丰富,除金鱼、锦鲤、虹鳉、新月鱼、剑尾鱼等外,还有彩鲫。金鱼已有一千多年的养殖历史,在体型、体色、鳍、眼、鳞被等许多性状上人工选育出100多个形态各异的品种。日本锦鲤也有一千多年的养殖历史,在体色、鳞被上选育出100多个品种,观赏的热带鱼类虽然养殖历史不久,但对体色遗传作过大量研究,发现这些热带观赏鱼的体色与性别有关,以及体色变异与等位基因不同组合的关系。彩鲫是 Aquarium ornamental fish has a long history of breeding, its species is extremely rich, in addition to goldfish, Koi, Rainbow 鳉, Crescent fish, swordtail fish, there are color crucian carp. Goldfish has been breeding for more than a thousand years, breeding more than 100 varieties in many traits such as body shape, body color, fins, eyes and scales. Japan Koi also has a thousand years of breeding history, body color, scales were bred over 100 varieties, ornamental tropical fish aquaculture history is not long, but a large number of body color genetic made a lot of study and found that these tropical ornamental fish Body color and sex, as well as body color variation and allele combinations of different relations. Color carp is