Anchovy (red and white wen-yu)
Anchovy (RedandWhiteWen-yu)
The color is red and white, if the two colors are mosaic, left and right symmetrical, extremely beautiful and moving, the price is also high.
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Disease control of soft-shelled turtle-hemorrhagic disease
Cause: it is not clear at present. Symptoms: the body of the diseased turtle is black, the mouth is red, some of the floor is red, some are not red, the action is slow, do not eat, serious mouth and nose have blood exudation. Anatomy shows that the viscera and muscles are all congested, the pharynx, neck and intestines are blood red, and the liver is red, sometimes accompanied by blood spots. Bold, spleen and kidney are red and black, lungs are black. Prevention and treatment: there is no effective treatment, we can only strengthen prevention. 1) thoroughly disinfect the culture pond before disinfection, "fish bacteria clear" 7 jin / mu; 2) before the turtle enters the pond
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Analysis and Countermeasures of hypoxia in cultured Fish
Hypoxia refers to the state in which the internal tissues and cells of fish do not get enough oxygen to maintain their normal function. In order to distinguish from hypoxia in water, it can be called "biological hypoxia" or "tissue hypoxia". Asphyxia (dyspnea) is a phenomenon that occurs during biological hypoxia, and floating head is a common manifestation of dyspnea or asphyxia in aquaculture production. There are two cases of anoxic asphyxia in fish: one is that when the dissolved oxygen in the water is insufficient and the air pressure is too low, even if the respiratory function of the fish is normal, the tissues and cells in the body can not get enough oxygen, resulting in "anaerobic hypoxia";
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