A native local crucian carp is a local crucian carp. Strictly speaking, in China, non-natural local crucian carp is called' crucian carp', and there is no fish in proper nouns. Except Tibet and Qinghai province, there is no such crucian carp in the local area, and it is found in all natural waters.
The biggest feature of local crucian carp is its small size, ranging from 4 to 10 cm in length, and the longest is 25cm. The growth cycle is extremely slow, with a big head and a narrow body. Due to the physiological cycle, a relatively large domestic local crucian carp was introduced to Australia in 2004 to control the flooding of aquatic plants. Just three years later,
Crucian carp (Carassius auratus) is a native fish in China, and it had a history of artificial culture about 1 100 years ago. However, due to the slow growth cycle of crucian carp, the economic benefits are not great, so the total number of people living in the suburbs must be quite large, but the non-pure crucian carp is becoming less and less. Since the first year of AD, the body size has exceeded 1 kg.
Silver crucian carp is a variety of local crucian carp. When I was young, I looked like a native crucian carp, but when I was an adult, my body was wider or even taller than the native crucian carp. The color of the fish turns silvery white and slightly yellow. The important thing is that it is much bigger than the original crucian carp. The maximum weight of crucian carp can reach 6 kg, which is much heavier than most engineering crucian carp.
However, crucian carp has different regulations on the temperature of natural water, and likes to live in shallow and cold waters. Therefore, allogynogenetic crucian carp is common in Altay region of Xinjiang and Liaohe River basin of Heilongjiang, but very rare in other waters of China. Among them, founder county Silver Crucian Carp and Altay Red Crucian Carp are famous.
Sanpengze crucian carp Pengze crucian carp is a local crucian carp, which grows in the middle and lower reaches of the Yangtze River. The biggest difference between pengze county crucian carp in Jiujiang, Jiangxi and other crucian carp is the color. Because Pengze crucian carp has been stabbed by reeds in the water for a long time, its scales are black and blue, and the natural Pengze crucian carp will have 5~7 black-gray reedlike patterns, so the natural Pengze crucian carp is also called Lu Hua crucian carp.
Pengze crucian carp, whether wild or cultured, is obviously heavier than other types of crucian carp. At present, the known record is 6.5KG, which is 13 kg. Pengyang crucian carp's normal weight is 1~3 kg, so Pengze crucian carp is also called Pengze crucian carp.
As can be seen from the name, the high-backed crucian carp in Dianchi Lake is a unique species in Dianchi Lake, Yunnan Province, with a flat side and a high back. The biggest basic characteristics are two points: the first body length is twice as long as the body width, and the second is dark gray scales, dark gray back, shallow abdominal cavity, silvery white or dark gray.
The greater feature of Dianchi high-backed crucian carp is gynogenesis, which only occurs in aquatic animals. Therefore, Dianchi high-backed crucian carp can ensure a very stable basic occupational characteristics. At this stage, the key to Dianchi high-backed crucian carp lies in all parts of Yunnan. Pure wild Dianchi high-backed crucian carp has long been included in the national aquatic population maintenance goal.
Five kinds of allogynogenetic crucian carp, Zhongke No.3, we usually refer to Xiangyun crucian carp, but in fact our other two female reproductive technology species are also called engineering crucian carp. The first one is Zhongke No.3, which is a long-term scientific research of Chinese Academy of Sciences and has been included in China's 973 plan.
With the full support of the country, a female breeding has the advantages of fast growth, large individual, high reproduction rate and strong drought resistance. It is a particularly good farmed fish. It has no preference for ingredients. As long as it is delicious, it can be swallowed, digested and absorbed, and it is completely picky about what to eat. The most important thing is that it has good adaptability. In the street, whether in the northeast or northwest, it has strong adaptability. Its growth rate is 2~3 times that of common crucian carp, and the weight of 1 year-old fish can reach 200 ~ 300 g.
Six high-yield crucian carp, also known as Baihua crucian carp, is an excellent variety of crucian carp created by fish cell engineering in the fish laboratory of South China Normal University. Generally, it is also considered as a female technical engineering crucian carp, which has a single color and a moist appearance, especially a very high dorsal fin.
High-yield crucian carp is large, fast-growing, too diverse in carnivorous habits and very strong in disease resistance. It can naturally spend the winter in the northern region without any safeguard measures. It is the first kind of crucian carp cultured by human beings in northern China. Its body size is between Turu crucian carp and Pengze crucian carp, and it can reach 65,438+0 kg at the age of 65,438+0. At present, most of the crucian carp caught by fishermen in the northern region are this kind.
Seven Xiangyun crucian carp Xiangyun crucian carp is a hybrid crucian carp and the initial variety of engineering crucian carp; The father was originally a wild crucian carp in Hunan, and the original female parent was red crucian carp. After hybridization, * * * produced two generations, namely Xiangyun crucian carp 1 and Xiangyun crucian carp No.2. Xiangyun crucian carp is a sterile crucian carp bred by human hybridization, and its fertility will become stimulating growth due to the inhibition of sex hormones, resulting in very fast growth like Sun Shangxiang.
At present, the crucian carp used for fishing in black pits in Hunan, Hubei, Jiangsu, Zhejiang and Northeast China are mostly Xiangyun crucian carp. Incidentally, because Xiangyun crucian carp is infertile, it is very likely that Xiangyun crucian carp was hardly caught in the suburbs.
Eight white crucian carp, formerly known as Osaka crucian carp and Japanese crucian carp, was introduced to China in 1970s. It is large in size, fast in growth cycle, and silvery white as a whole, so it is named white crucian carp. White crucian carp is very big, 2~3 kg is very common; High back, very camel, big head and long tail; The recipes of white crucian carp and silver carp are very similar, so in many lakes and library documents in China, almost all white crucian carp appear in the places where silver carp and silver carp exist. Because the scales of white crucian carp are reflected by the light source, people look like they are shining, so we usually catch white crucian carp when we catch big fish.
These crucian carp are the most famous species in China, but not only these species, such as hybrid goldfish, black crucian carp, Puan crucian carp, Chuzhou crucian carp and other species with strong regional characteristics, but also some species that are particularly unique and only produced locally, such as the shrinking crucian carp in Shaoguan, Guangdong Province, and the crucian carp named after its size, which is actually the cross-mountain crucian carp in the family Perciformes, are all very interesting.