金鱼为什么突然变色

金鱼（细节）

金鱼有迷人的颜色，受到人们的称赞。但尽管它很常见，但它也有许多神秘的奥秘。例如，金鱼是一种“变色龙”。基本的颜色随着身体的发展而逐渐改变，在它的一生中会改变几次颜色。这一特点经常会引起新手养鱼者的困惑。我的金鱼是如何变色的？它会引起什么病

福建省福州市仓山区市民夏先生突然把红色的金鱼变成了透明的白色。他家的小金鱼长约10厘米。一个是橙色的，另一个几乎是透明的，除了尾巴和鳍。你可以更近一点看到内脏。这种颜色变化的小金鱼在外观上与它的同伴完全不同，但它的活力并没有减少

那么金鱼变色的原因是什么？金鱼的变色主要与金鱼的遗传不稳定有关。此外，一些鱼类食品制造商会添加增色成分，但如果剂量添加不当，长期食用的金鱼会褪色。“这种现象是不可逆转的，但不会影响金鱼的健康生长。

金鱼的祖先是鲫鱼。和大多数其他淡水鱼一样，鲫鱼的颜色不是很鲜艳，而且在自然条件下，它的体色太鲜艳，也不能起到生态保护色的作用。它会被天敌发现，很难生存。当鲫鱼的颜色被中国人发现后，认为它是上天赐予的，寓意好运。它是人工饲养的，不再参加大自然的竞争，这样鲜艳的体色就可以保留下来。在现代，采用杂交育种进一步丰富了金鱼的颜色。金鱼的颜色由黑素细胞、黄色色素细胞、白色反射（鸟苷）细胞和蓝色反射细胞组成。当其中一个细胞的密度较大时，鱼的身体就会呈现这种颜色。不同颜料的比例不同，身体颜色也不同。多色金鱼由两个以上的色块组成，形成千变万化的图案。像自然调色板一样，使用几种原色来混合美丽的颜色

除了外部因素的影响，金鱼皮层的色素和反射层可以加深，有些保留或稀释，有些在金鱼发育的各个阶段消失，导致金鱼不同的体色发育。刚孵出的金鱼全身是透明的，但在大约1个月大时，它开始出现白色和青色的色素斑点，稍后会逐渐变色，一些色素变得越来越明显，另一些则变得越来越淡，甚至消失。

此外，金鱼变色还有其他因素：

1。水温的变化也会导致金鱼变色。

通常，当水温相对较高时，金鱼的体色变化很快，需要15-20天才能完成整个变色过程。然而，当水温相对较低时，变色过程将更加缓慢，需要长达半年的时间。

2。光纤因素也会导致金鱼变色

光线通过金鱼的视觉刺激神经中枢，从而影响其变色。在弱光或黑色容器中饲养的金鱼会褪色较晚，褪色后会形成深色的体色，否则，它会很早很快褪色，褪色后的体色也会很浅。长期在清水中饲养的金鱼会提早褪色，而在浓缩的绿水中饲养的金龙鱼则会晚些褪色。因此，有必要在幼鱼饲养过程中增加光照，改善水质，以促进金鱼早期变得优秀

Why does goldfish suddenly change color

Goldfish (details)

Goldfish has charming colors and is praised by people. But although it is common, it also has many mysterious mysteries. For example, goldfish is a "chameleon". The basic color changes gradually with the development of the body, and it will change color several times in its life. This feature often causes the confusion of novice fish keepers. How does my goldfish change color? What disease does it cause

Mr. Xia, a citizen of Cangshan District, Fuzhou, Fujian Province, suddenly turned the red goldfish into transparent white. The small goldfish in his family are about 10 cm in length. One is orange, and the other is almost transparent except for the tail and fins. You can see the viscera a little closer. This small goldfish with color change is completely different from its companion in appearance, but its vitality is not reduced

So what is the reason for this discoloration of goldfish? The discoloration of goldfish is mainly related to the genetic instability of goldfish. In addition, some fish food manufacturers will add color-enhancing ingredients, but if the dosage is not properly added, the goldfish that has been consumed for a long time will fade. "This phenomenon is irreversible, but it will not affect the healthy growth of goldfish.

The ancestor of goldfish is crucian carp. Like most other freshwater fish, crucian carp does not have very bright colors, and under natural conditions, its body color is too bright, nor can it play the role of ecological protection color. It will be found by natural enemies and difficult to survive. When the body color changes to red (yellow) in nature The color of crucian carp, after being discovered by the Chinese people, believed that it was bestowed by heaven and implied good luck. It was raised artificially and no longer participated in the competition of nature, so that the bright body color could be preserved. In modern times, the adoption of cross breeding has further enriched the color of goldfish. The color of goldfish is composed of melanocytes, yellow pigment cells, white reflective (guanosin) cells and blue reflective cells. When the density of one of the cells is large, the fish body will show this color. The proportion of different pigments is different, and the body color is also different. The multi-color goldfish is composed of more than two color blocks, forming a ever-changing pattern. Like natural color palette, use several primary colors to mix beautiful colors

In addition to the influence of external factors, the pigment and reflective layer of the goldfish cortex can be deepened, some retained or diluted, and some disappeared in various stages of goldfish development, resulting in different body color development of goldfish. The whole body of the newly hatched goldfish is transparent, but at about 1 month old, it begins to show white and cyan pigment spots, which will gradually change color later, some pigments become more and more obvious, others become more and more faint or even disappear

In addition, there are other factors for goldfish discoloration:

1. The change of water temperature will also cause goldfish discoloration.

Generally, when the water temperature is relatively high, the goldfish's body color changes quickly, and it takes 15-20 days to complete the whole discoloration process. However, when the water temperature is relatively low, the discoloration process will be more slow, and it will take up to half a year

2. The optical fiber factor can also cause goldfish to discolor

The light passes through the goldfish's visual stimulation nerve center, thus affecting its discoloration. Goldfish raised in weak light or in black containers will fade late and form a dark body color after fading, otherwise, it will fade early and quickly, and the body color after fading will also be light. Goldfish raised in clear water for a long time will fade early, while goldfish raised in concentrated green water will fade later. Therefore, it is necessary to increase the light and improve the water quality during the rearing of young fish to promote the goldfish to become outstanding early