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Fish farming tips?

Fish is the oldest vertebrate. There are about 2,000 species of fish in China, including hairtail, yellow croaker, hairtail, pomfret, mackerel, Spanish mackerel, salmon, anchovy, shad, etc. Fish are divided into two classes: jawless and jawed. The jawless class includes cyclostomes and armored fishes, and the jawed class includes placoderms, chondrichthyes, and ray-finned fishes. Most fish are cold-blooded vertebrates that live in water all year round, breathe with gills, and use fins to assist body balance and movement. Regarding fish breeding techniques, I will tell you a few points based on my own situation.

1. Selection of stocking time: Fish species should be stocked on sunny days when the temperature is not too low. The general stocking temperature is 2℃-5℃. At this stage, the fish scales are tight and the activity is small. It is difficult to catch, transport and stock fish. It is not easy to damage the fish body, which can reduce the morbidity and mortality of fish species. When the temperature is too low, it is easy to get frostbite on rainy, snowy, frozen and windy days; when the temperature is too high, the fish scales are loose and active, and the fish are easily injured during operation.

2. Stocking of fish: Before the fry are put into the pond, the pond should be cleaned first and the medicine should be checked to see if it is expired. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be collected in advance and the test fish should be put into the water for testing. According to the stocking plan, individual size, density and matching species and specifications, if there are enough, they can be released at once, not in batches, so that the fish can adapt to the environment, start eating early and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3. Feed bait at the right time: When the water temperature rises to 8-10℃, the fish begin to eat, and the food intake gradually increases with the increase in water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, once in the morning and once in the afternoon. Feeding should follow four principles (timing, quality, positioning, and quantity). The specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and fish food conditions. For grass carp weighing more than 1 kg, it is recommended to feed Da Beinong advanced puffed feed 8103 at the beginning of feeding; for small grass carp, it is recommended to feed Da Beinong microecological juvenile fish special bait [Intestinal Liver Health], and the feeding amount is controlled at 0.5%1%. About 1. This product is rich in nutrients and rich in probiotics, which can quickly repair the fish's intestines, restore physical fitness, and improve immunity.

4. Apply more organic fertilizer to increase water fertility. Triple-effect fertilizer, organic biological fertilizer, has a long-lasting fertilizer effect, benefits algae sources, and promotes algae growth. Fertilize the water quickly. After the fish pond is cleaned, frozen, and disinfected in winter, the fertility of the water is low. As the saying goes, raising fish starts with raising water, so fertilizing the pond water is particularly important. It is best to apply organic fertilizer in spring. It is recommended to use biological fertilizers rich in various trace elements [Triple-effect fertilizer] or fertilizer pioneer [Yizaoyuan]. The specific amount and frequency of fertilization should be determined according to the quality of pond water and fertilizer.

The general principle is: use more in early spring and less time, and use less in late spring and more. Make the pool water green (including blue-green, yellow-green, bean green) or brown (including yellow-brown, reddish brown, tea brown). The transparency of the water should be moderate, maintained at about 30 cm. The water temperature in early spring should be low, controlled at 20-30 cm. The temperature in late spring should be controlled at 20-30 cm. The height should be controlled at 25-35 cm, and the water quality should be kept rich, active, tender and cool.