Early spring is the best season for stocking fish, because at this time the water temperature is lower, the fish's activity is slightly weaker, and the fish body is strong, the scales are tight, the nets, fishing and transportation are not easy to be injured, and the survival rate of the fish stocks can be improved. When stocking, follow these steps: 1. Choose fish species: If you want fish to grow well, there is skill in selecting fish species. High-quality fish should have the following three characteristics: 1 Appearance: neat specifications, bright color, thick back muscles, scales, fins intact, surface injury-free, no parasites; 2 Action: Agile, rapid response, generally will Take the initiative to grab water; 3 specifications meet the standards, the general specifications should be greater than 13 cm, grass carp larger than 15 cm. Such as: a total length of 15 cm of fish species, per kg of grass carp is about 12, about 13 white locust, calyx 11 or so, herring around 12. It is possible that fish species may be weak and thin if they are more than this mantissa; fat content may be higher if less than this mantat. 2. Disinfection of ponds: Disinfect clear ponds in the aquaculture waters before stocking fish species, remove excess silt, and disinfect and kill them with quick lime and bleaching powder. 3. Fertilizer water quality: Normal fish ponds should be filled with fresh water after 5 days of disinfection, and base fertilizers (best farmhouse fertilizers) should be applied before stocking fish species to breed aquatic natural food organisms. Foodstuffs. Look at the situation of the feed if you need to top-dress in order to keep working and applying less, so as to prevent deterioration of water quality and prevent the growth or survival of fish. 4. Disinfection of fingerlings: The fish should be sterilized and sterilized by removing 2% to 3% of salt water or potassium permanganate (20g/m3) for 5 to 10 minutes prior to the release of the fish. 5, fish ponds: choose to put the best fish on a sunny day, put the location in the upper air outlet. The operation should be light and fast, and be careful and careful to prevent fish from being injured. In the lower pool, the temperature difference between the water temperature in the container and the water temperature of the culture water should be controlled within 3°C. 6. Feeding in a timely manner: After 2 to 3 days of stocking, the fish has adapted to the environment and should start feeding the feed. Food And Beverage Additive is a nonnutritional substance that is added consciously, generally in small amounts, to food to improve its appearance, flavor, structure, or storage properties.According to this definition, food fortifiers with the purpose of enhancing the nutritional content of food should not be included in the scope of food additives.Food additives have the following three characteristics: one is to add to the food of the material, therefore, it is generally not eaten alone as food;Second, it includes both synthetic substances and natural substances.Third, it is added to the food for the purpose of improving the quality of food and color, aroma, taste and for the need of anti-corrosion, preservation and processing technology. Food And Beverage Additive,Natural sweeteners, natural sweeteners, natural colors PYSON Co. ,Ltd. , https://www.pysonbio.com