Goldfish (definite introduction)

Goldfish have attractive looks and are praised by people. However, although it is rare, it also has many mysterious secrets. For example, goldfish are "chameleons" whose basic texture gradually changes with the development of the body, and will change color several times in its life. This characteristic often causes Beginner fish keepers are confused, why did your goldfish change color? Is this a disease outbreak?

 Mr. Xia, a citizen in Cangshan District, Fuzhou, Fujian, suddenly had a transparent color on his little red goldfish in his home. His little goldfish are all about 10 centimeters in length. One is orange-red, and the other is almost transparent except for the tail and fins, which are orange. If you get closer, you can see the internal organs, etc. . Although the appearance of this little goldfish that changes color is completely different from that of its companion, it is still full of vitality.



So what is the reason for this discoloration of goldfish? The discoloration of goldfish is mainly related to the genetic instability of goldfish. "Perhaps its parents were once white, and it inherited it." In addition, some fish food manufacturers will add ingredients to enhance the color, but if the dosage is not increased appropriately, it will cause the goldfish that has been eaten for a long time to fade. "This situation is irreversible, but it will not affect the healthy growth of goldfish.



The originator of goldfish is crucian carp Crucian carp, like most other freshwater fish, does not have a particularly bright color. Under natural conditions, if the body color is too bright, it will not play the role of ecological protection. It will be discovered by natural enemies and difficult to survive in the natural world. The crucian carp whose body color gradually turned into a red (yellow) color was discovered by the Chinese. They considered it a gift from God and meant safety. They raised it 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 inoculation breeding methods has further enriched the color of goldfish. The color of goldfish is composed of melanocytes, yellow pigment cells, white reflective (guano pigment) cells, and blue reflective cells. When the density is high, the fish body will show this color due to different pigments.The different proportions result in different body colors. Multicolor goldfish are composed of two or more color blocks, resulting in endlessly changing patterns. Like a natural palette, use several natural colors to create a beautiful look.



In addition to the role of surface factors, the pigment and reflective layer of goldfish cortex can be deepened in various developmental stages of goldfish. , some remain or fade, and some disappear, causing the goldfish's body color development to be inconsistent. The newly hatched goldfish is transparent all over, and around 1 month old, it begins to show white and cyan pigment spots. From then on, it will gradually change color, with some pigments becoming more and more obvious, and some It becomes increasingly faint and even disappears.



In addition, there are other factors that cause goldfish to change color: 

< p style="text-indent:2em;">1. Changes in water temperature will also cause goldfish to change color

Under normal circumstances, when When the water temperature is relatively high, the goldfish's body color changes quickly, and it takes 15-20 days to complete the entire discoloration process. However, when the water temperature is relatively low, the color change process will be slower, lasting as long as half a year. Undecided.



2. Optical fiber elements can also cause goldfish to change color



The light stimulates the nerve center of the goldfish through its vision, thereby causing it to fade. Goldfish raised in an environment with weak light or in a black container will fade slowly and the body color will be darker after fading. On the contrary, goldfish will fade early and quickly, and the body color after fading will also be light. Goldfish kept in clean water for a long time will fade early, while goldfish kept in dark green water will fade later. Therefore, the light should be increased during the raising of young fish and the water quality should be improved to promote the early growth of goldfish.





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