Catalog
1. Habitat
2. Morphological Characteristics
3. Distribution Range
4. Culture Technology
5. Nutritional Value
Habitat
Hypophthalmichthys nobilis is found in freshwater lakes, rivers, reservoirs and ponds. It is mostly found in the middle and upper layers of freshwater areas. Bighead carp are tame and do not like to jump. It is a filter feeder, mainly eating zooplankton such as rotifers, dendrites and copepods (e.g., daphnia), but also eating some phytoplankton (e.g., diatoms and cyanobacteria) and artificial feed. It grows rapidly, and the largest individual can reach 40 kilograms.
Morphological Characteristics
The bighead carp has a laterally compressed body and an extremely fat head. The mouth is large and terminal, and the lower jaw is slightly inclined upward. Gill rakers are finely paged but not united. Oropharyngeal cavity with screw-shaped supra-gill organs in the upper part of the mouth and throat cavity, eyes small, low position, beardless, hypopharyngeal teeth spoon-shaped, tooth surface smooth. Scales small, ventral surface only ventral fins and even anus with cortical ventral ribs.
Pectoral fins long, terminating well beyond base of ventral fin. Caudal fin forked, with 3 hard dorsal fin spines; 7 soft dorsal fin bars; 1 to 3 hard anal fin spines; 12 to 14 soft anal fin bars. The upper part of the body is grayish-black, the abdomen is grayish-white, and there are many small irregular spots of light yellow and black on both sides. The body length can reach 112 centimeters.
Range of Distribution
The bighead carp is native to China and has been introduced to freshwater waters around the world, and is now causing ecological problems in some countries.
Culture Technology
Disease Prevention and ControlFish disease prevention and control adhere to the policy of prevention and control. Fish disease is generally in the barley yellow, white dew heart prone to the onset of one is the gradual increase in water temperature, the other is the gradual decline in water temperature. These two seasons are the peak season of fish disease, to prevent in advance. Disease prevention adopts the method of killing first and sterilizing later. Diagnose fish disease by visual inspection or microscope, and prescribe the right medicine.
A, parasitic diseases: kill worms once a year in April-May, a large number of organic fertilizers in the water in July-August to kill a worm, the common parasitic diseases of large water surface are: a, Lernaea chinensis: its symptoms are eggs or worms parasitized in the gills of the fish, a small number of parasites with no obvious symptoms, a large number of parasites, the gills of diseased fish with mucus, gill filaments at the end of the puffed up oedema, pallor, respiratory distress agitation, in the surface of the water body spinning or wildly. The fish will spin or swim wildly in the surface layer of the water body, and the tail fin is often exposed to the water surface, which is commonly known as "tail disease", and finally will lose weight and die of asphyxiation. The main use of abamectin or pyrethroid drugs to prevent and control.
b, Anchovy disease: the symptoms of the sick fish body surface can be seen large insects, parasitic red, restless, poor appetite, and then fish wasting and death. The main use of avermectin or pyrethroid drugs to prevent and control.
B. Violent hemorrhagic disease: the symptoms are protruding eyeballs, congestion; the body surface is congested and red. There are two kinds:
a, primary hemorrhagic disease: only need to sterilize.
b, secondary hemorrhagic disease: first, the death of the bottom layer of fish, the lower layer of physical and chemical indicators seriously exceeded, followed by large-scale death. First kill the worms, and then sterilize and adjust the water according to the situation.
Nutritional value
The brain of bighead carp for consumption contains a kind of fish oil which is needed by the human body, and the fish oil is rich in polyunsaturated fatty acids, which is a kind of essential nutrient that can play a role in maintaining, improving and enhancing the function of the brain. The flesh under the gills of the fish is transparent and gelatinous with plenty of moisture, which is rich in collagen that can fight against aging and repair body cell tissues.
[Eat: bighead carp, its taste is sweet, warm, general people should eat, physical weakness, spleen and stomach cold, malnutrition eat better. Regular consumption can also moisturize the skin. It is also suitable for those who are on fire. Suitable for weak, cold spleen and stomach, malnutrition people eat; cough, edema, hepatitis, vertigo, nephritis and weak people should eat.
The bighead carp should not be eaten too much, otherwise it is easy to cause sores and scabies. In addition, those who suffer from itchy skin disease, internal heat, urticaria, ringworm and other diseases should not eat. Moreover, the fish gall bladder is poisonous do not eat. ... Hypophthalmichthys nobilis is warm and cool in nature, and should be avoided by people with fever and those with internal heat, urticaria, ringworm, and itchy skin diseases.
1, bighead carp is warm, fever and internal heat, urticaria, ringworm, itchy skin disease should be avoided, eat too much easy to cause scabies.
2, bighead carp gall is bitter, cold, poisonous, used for intravenous injection has a short-lived antihypertensive effect, but the antihypertensive dose is very close to the dose of poisoning, so the use of clinical need to be careful. Nutrition bighead carp belongs to high protein, low fat, low cholesterol fish, per 100 grams of bighead carp contains 15.3 grams of protein, 0.9 grams of fat. In addition, bighead carp also contains vitamin B2, vitamin C, calcium, phosphorus, iron and other nutrients.
Bighead carp has a protective effect on the cardiovascular system. Rich in phospholipids and improve memory of the pituitary gland posterior lobe hormone, especially the medulla oblongata content is very high, eaten regularly can warm the stomach, get rid of dizziness, benefit IQ, help memory, delay aging, moisturize the skin.