Some people say that crucian carp is the ancestor of goldfish, is there a scientific basis?

Some people say that crucian carp is the ancestor of goldfish, and this sentence is completely true, because goldfish are indeed domesticated by crucian carp after a long period of domestication, and the reason why goldfish will be domesticated is because they are good-looking and will be used for viewing. In the beginning, the color of goldfish was actually artificially selected, and in the end, hundreds of mutated varieties appeared to become goldfish. In fact, during the Jin Dynasty in China, goldfish had already begun to be domesticated.

At that time, it was discovered that the body of the crucian carp was gray, but sometimes it would turn golden or red, and when it was raised, the dark gray crucian carp suddenly turned yellow or golden fish. So people began to breed fish of this color selectively, and put them in some small clay pots in their homes, but most of them were raised in ponds and then caught and shown off when guests came. By the time of the Song Dynasty, the empress would also order the construction of a pond and begin to cultivate this red and golden mutated crucian carp.

Because the ancient royal family attached great importance to yellow, and civilians could not get anything yellow, these breeders would start to breed orange fish, so orange goldfish were more common than yellow goldfish. By the time of the Ming Dynasty in China, there was also the first time that there were records related to flower-tailed goldfish, and people began to consciously choose those mutated and deformed goldfish to become indoor ornamental fish, so goldfish were domesticated. Later, after hundreds of years of development, today's goldfish are different in shape, size, and color.

Between 1650 and 1700, goldfish began to spread from China to Japan, and two other species of goldfish were born in Japan. In the early 19th century, the Japanese began to raise koi fish, as well as goldfish, which are generally viewed from above, while goldfish can be viewed from the side, so people can see different fish from different angles. Japanese goldfish are not related to crucian carp, but those goldfish species are domesticated from China's silver crucian carp.

I think the scientific basis is probably because the two fish species are similar in personality traits and living environment, and they are also highly similar in other aspects and relatively similar in terms of management, so it is believed that crucian carp is the ancestor of goldfish.

There is a variation in the crucian carp itself, and intelligent people keep this variation and reproduce it, and finally pass it on from one generation to the next. When goldfish first started breeding, they only had a tail and were colored, but after continuous improvement, they became the goldfish they are today.

Any kind of goldfish can be crossed with wild crucian carp, and the offspring after crossing have normal reproductive ability, indicating that they are very closely related.

At this point, it is almost the same as the original Dutch tulips, in fact, it is almost through dominant inheritance to judge whether the next generation will meet our growth needs. And I heard that the breeding of goldfish in our country has a long history, and it has already started in the Song Dynasty.

Of course, it's crucian carp, kindergarten children know it, why are you so entangled? The ancient Chinese cultivated goldfish in writing, and the facts are simple and clear, and there is nothing doubtful.

Goldfish is evolved from wild crucian carp, which is a species formed after long-term domestication, selection and cultivation by humans.

Through investigation, goldfish evolved from crucian carp and are generally wild.

Goldfish evolved from wild crucian carp, which was bred by humans for a long time, and then selected better varieties to breed, and evolved to the current goldfish.

<> "Is crucian carp the ancestor of sedan goldfish?"

Goldfish are very beautiful, but crucian carp is gray, and many people think that they are two different fish.

Those who think this way are very wrong, crucian carp is actually the ancestor of goldfish.

Goldfish are derived from crucian carp, and this process can be described as a long time.

Our country is the homeland of goldfish. Crucian carp was originally silver-gray, but later the pigment mutated, and reddish-yellow crucian carp began to appear. In the Tang Dynasty, there were already fish with this change in the "release pond".

Since the beginning of the Song Dynasty, there have been golden fish, and the color has two colors: white flowers and spots. In the Ming Dynasty, it was popular to use the bathtub to raise this kind of closed-travel amusement fish, and since then, in order to adapt to the life in the basin, the body shape has gradually changed from a fusiform to a short circle; The fins also began to grow longer and shorter, and the swimming speed became slower. After the Qing Dynasty, breeders began to select species, and the number of golden species continued to increase.

To sum up, goldfish is actually evolved from crucian carp.

Since the Song Dynasty, it has a history of more than 1,000 years.

Goldfish is a variant of the golden crucian carp because of concerns about genetically mutated species. On the other hand, fish is very rich in food, while goldfish is too small to meet people's dietary requirements.

Scientists at home and abroad have published many treatises on goldfish species, and the original origin of goldfish is in China.

Extended information: Before 1981, the number of goldfish varieties developed to about 160, and now there are more than 240 traces of Shenyu, and there are more than 140 in China. According to the prevailing classification method, goldfish can be divided into four categories: grass, text, dragon and egg (Wang Zhanhai et al., 1982); According to the presence or absence of dorsal fins, they are divided into two categories: dragons (with dorsal fins) and eggs (without dorsal fins).

It is a valuable species among goldfish. There is a pair of specially constructed eyes, that is, around the eyeballs grow a large bubble containing liquid translucent, so it is called "blister eyes". The vesicular film of the blister is very thin and clear to wear, like two beads hanging on the width and sides of the fish's head.

When the blister fish swims, the two blister eyes are like two big lanterns, fluttering from side to side, and the double tail fin is fluttering, which is very charming.

The golden carp species is the oldest of the goldfish, and its representative species are: () aGolden carp, black carp, red and white crucian carp.

b.Golden carp, black carp, and Ryujin.

c.Golden carp, grass gold luck guess fish, pearl goldfish.

d.Golden crucian carp, black blister goldfish, red and white crucian carp.

Correct Answer: Trillion A

First of all, the direction of artificial selection is people's needs and preferences, goldfish originated in our country, after a long time of cultivation, the variety continues to optimize, now the world's goldfish are directly or indirectly introduced by our country As the world's most cultural ornamental fish, it has long established its noble identity as a national fish in the hearts of the Chinese people, so it is the result of people's choice according to their own preferences and needs, rather than the result of natural selection

Therefore, b