对锦鲤而言,体色是影响其市场价格的主要因素,因此,如何提高体色的观赏价值是锦鲤研究的重点之一。目前的许多研究表明,光照、生理状况、饲料营养等多种因素都能影响到鱼的体色。而在同一品种中,饲料对体色的影响更为突出。鱼类可利用类胡萝卜素作为肌肉和皮肤的着色剂,但是鱼类自身不能合成这些色 Koi, color is the main factor affecting the market price, therefore, how to improve body color ornamental value is one of the key research Koi. Many studies show that the body color of fish can be influenced by many factors such as light, physiological condition, feed nutrition and so on. In the same species, the impact of feed on body color is more prominent. Fish can use carotenoids as a coloring agent for muscle and skin, but fish themselves can not synthesize these colors