Silver carp. Kan "Qichun language": "case I build rural people fish are silver carp in the pond, The Definition of its first big fat head; first small person, say silver carp child." Xu Chaofu "lone joiner": "He sent a are only five pounds heavier burden to pounds of silver carp child - the most inferior fish. "
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Silver carp (hypophthalmichthys molitrix) is Cypriniformes, carp, silver carp subfamily, genus silver carp. Commonly known as: silver carp son, silver carp, while fish. English name: silver carp, silver loweye carp. Flat side of the body, the head is large, but nowhere near bighead carp. Mouth wide, end position, the lower jaw slightly inclined upward. Gill cake specialization, each combined into porous membranous film. Oropharyngeal cavity spiral-shaped upper gill organs. Eyes small, low position, no. Pharyngeal teeth spoon-shaped, flat flat, striated tooth surface has feathers, small scales. To have developed between the anus cortex ventral edge from the throat. Pectoral pelvic fins extending to the end of the beginning or later only. Body silvery gray fins. Inhabit the body of water, the upper, sex and lively, the water in case of shock after the jump. Phytoplankton. 3 years old up to sexual maturity. Broodstock than April to late June, when the water temperature reached above 18 ℃, or flow rate increased when the river rose, bubbles swirling rapids in the river water to breed. Young fish swim into the bend of the river or lake active foraging. After spawning broodstock diets rich tend to enter lakes feeding fattening. In winter, the lake landing, mature individuals returned to the depths of the main stream of the river in winter; immature individuals will overwinter in most lakes subsidiary body of water deep water. Winter is not very active state. Silver carp is widely distributed in eastern Asia, in China's major river systems, everywhere. This fish grow fast, from age 2 to 3 years old, weight by 1 kg to 4 kg, the maximum individual up to 40 kg. High natural production. Meanwhile, silver carp food for phytoplankton, thus becoming the finest fish breeding fish, freshwater aquaculture has always been included in China's "four fish" one. In China and Vietnam Red River Hainan Nandu River, the habitat of another large-scale silver carp (hypophthalmichthys harmandi), shaped like carp, silver carp body is slightly wider than the back bulge is higher. The main difference between the two: silver carp lateral line scales of 91-124 months, branched anal fin rays 11-14 roots; rather than the large scale silver carp and silver carp and large scales, lateral line scales of 78-88 months, branched anal fin Article is 15. Large scale silver carp inhabits slow water flow, water is fat, plankton-rich open water. Dive in deep water during the day, at night the water upstream feeding plankton. Females reach sexual maturity age 2, male first winter as an age. Reproductive period of 5-6 months, and sometimes can be extended to mid-August. Habits, diet and silver carp were similar, the maximum individual up to 25 kg, its fast growth, fatness degree, with advantages of high quality, farming and fishing has become an important object of Hainan Island pines reservoir. Nutrients silver carp muscle length changes with the seasons change and its range is: Water accounts for 60.3-80.9%, 15.3-18.6% protein, fat 2.0-20.8%, ash 1.0-1.4% nitrogen free extract 0.2 -1.7%. Biochemical composition of fish muscle growth and development of the fish also with changes, when the moisture content decreased, protein and fat is gradually increased. Silver carp muscle fatty acid composition of total fat and 20 species, of which four kinds of saturated acids, three kinds of single-acid, three kinds of acid, from nine kinds of acid, from one kind of arachidonic acid, carbon chain length between 12-20 . The percentage content of saturated fatty acids than unsaturated fatty acids is low, and the content of saturated fatty acids increases with the growth of the fish, then the unsaturated acid decreases with the growth of the fish. In addition to protein and fat, but it also contains edible parts per hundred grams carbohydrates 0.8 g, 117-123 kcal calories, 22-31 mg of calcium, phosphorus 86-167 mg, iron 1.2-13.3 mg, 0.04 mg of thiamine , riboflavin 0.21 mg, 2.1 mg niacin, nutrient rich. Muscle for medicinal, sweet, warm, warm in air with a function, attending Jiubingtixu, loss of appetite, dizziness, fatigue. Toxic bile, swallow fish guts tend to cause poisoning; poisoning symptoms and grass carp, carp same. In this regard, there is no special treatment, attention should be paid not to swallow the fish guts, to avoid poisoning.