The most viable fish - 鲫
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Carassius auratus auratus belongs to the order Acrididae, Acipenseridae, Carinidae, Acarus. Commonly known as: happy head, 鲫 abduction child (Hubei), 鲫 melon seeds (Northeast), river 鲫 fish (Shanghai), Moon 鲫 Aberdeen (Guangdong); ancient name 鲋, 鲋, 鲋. English name: Goldfish, crucian carp. The body side is flat and tall. The body length is 2.2-2.8 times the body height. The abdomen is round and the head is small. The kiss is blunt, the mouth is end-positioned, and there is no need, and the hypopharyngeal side is flat. The dorsal fins and anal fins have a stout hard sting with a serrated trailing edge. The scales are larger, the whole body is silver-gray, the back is dark gray, and the belly is grayish. Carp is widely distributed and widely adapted fish. It has strong adaptability to various ecological environments, from sub-frigid zone to tropical zone, regardless of the depth of water, flowing water or still water, clean water or muddy water, low oxygen, acid, alkali and other environments. Can adapt. Generally, they like to inhabit in aquatic grasses, slow-flowing shallow rivers, lakes, and ponds. They are not demanding water temperature, food, water quality, and spawning grounds, and they cannot be tolerated by other farmed fish. Growth and reproduction in adverse environments. Squid is also a wide temperature fish. Water temperature can absorb and digest food at about 10°C and 32°C. It can live for a long time when the oxygen content of the water is low. Only when the oxygen content is low, it will live for a long time. Only when the oxygen content is as low as 0.1 mg/L will it begin to die, and it will be more alkaline. Water (PH = 9) can also grow and multiply. Salmon is also an omnivorous fish. Their recipes are extremely wide and miscellaneous. Their animal foods are mainly cladocera, copepods, bryozoans, rotifers, freshwater shell vegetables, oysters, chironomid larvae, and shrimps; Plant foods are dominated by plant debris. Diatoms, filamentous algae, and aquatic plants are common. In southern China, salmon are ingested almost all year round; in the north, food intake is stopped from December to March of the following year. June-August is their most vigorous feeding period. The growth rate of squid is slow, and it only grows to 50 grams in that year. It grows to 100-150 grams in the second year and reaches more than 300 grams in the third year; the largest individual can reach 2.5 kilograms, and the common individuals are generally about 250 grams. In the south, carp generally begins to mature at 1 winter, and in the north it generally starts at 2 years of age and matures. The spawning period can be extended from March to August. The natural spawning grounds are mostly in shallow water bays and aquatic grassy areas. The water temperature during spawning is above 15-16°C. Most of them are in rain, and the broodstock swims against the water and goes to spawning grounds to produce eggs. egg. Spawning sites are selected in the shallow water areas where lakes and rivers are covered with aquatic plants. They can also lay eggs in ponds and other hydrostatic environments. Spawning takes place in the middle of the night or early morning. The eggs are produced in batches, and the fertilized eggs are sticky and adhere to the aquatic plants. The sexual problems of carp are rather complicated. There have been reports of the phenomenon of hermaphroditism. It has also been said that carps have the ability to gynogenesis. In nature, there are more females than males, and the male to female sex ratio is about 4:1. Eel is produced in all kinds of waters except the Qinghai-Tibet Plateau in China. Carp meat is delicate, delicious, and has a high nutritional value. Each gram of edible portion contains protein 13.0-19.5 grams, fat 1.1-7.0 grams, carbohydrates 0.1-5.8 grams, minerals (ash) 0.9 grams, heat 62-109 kcal, calcium 50-116 mg, phosphorus 192- 218 mg, iron 1.1-4.4 mg. All over the country, they love to eat squid and are regarded as fine foods; especially after maternal food squid soup, they can increase milk. In natural waters, the production of carp is the highest proportion of the total freshwater fish production. Due to its adaptability, squid can grow and reproduce in all kinds of water bodies, and the first-instar fish are mature and the population recovers quickly. Therefore, they have been used as breeding objects. There are many varieties of squid that are farmed. The common varieties of goldfish are those that have been artificially screened and domesticated. Squid fish is sweet, warm, and has the effect of opening the spleen and stomach, increasing appetite, eliminating edema, stopping vomiting, and milking. Fish eggs can be adjusted in qi. The whole fish medicine, can treat measles, mumps, toothache, gum swelling, sore, early breast cancer, lung pain, lung abscess, external hemorrhoids, spleen and stomach weakness, loss of appetite, edema, swelling of ascites, nausea and spit, stomach pain, maternal Lack of milk, postpartum milk less embolism. Its bile can cure warts, innocent swellings, and acne.