动物各有自己与众不同的体色,鱼生活在特殊环境之中,它们的体色更是五彩缤纷、千姿百态,而且在许多情况下是为了生存的需要而形成的。 掩蔽 我们爱好钓鱼的都很清楚,常见的鲫鱼,有银灰色、青黑色和泥黄色的,那是生长在不同水域的结果。如把青灰色的鱼,移养到泥黄水色的池塘里,不用多 Animals have their own distinctive body color, fish living in special circumstances, their body color is more colorful, different, and in many cases is formed for the needs of survival. Masking the hobby of fishing we all know very well, common crucian carp, there are silver, blue and black and mud yellow, it is the result of growing in different waters. If the blue-gray fish, raised to the muddy yellow pond, not more