Usually, when fish are sick, the most commonly used treatment method is the old three samples, that is, changing water to raise temperature and reduce salt. The salt here is sea salt, and the concentration of salt is generally around 0.3-0.5%. The scientific name of yellow powder is furacilin, which can effectively sterilize and treat trauma and blindfold. Methylene blue is mainly aimed at parasites.
Before raising fish, fry with strong physique, sensitive reaction and no disease or injury should be put into the fish tank. During the selection process, the head, eyes and tail of fish can be observed, the head, eyes and tail of healthy fish will not be injured, and the scales will not fall off.
In the process of throwing fry, it is necessary to take measures of flooding. Put the bag containing fry directly into the fish tank, and after the water temperature in the bag is close to that in the tank, pour the water in the tank into the bag. After the fry adapt to the environment, you can cut the bag and let the fry enter the fish tank.
Matters needing attention in fish farming
The stocking density is related to environmental factors, feed conditions, species and specifications of fish species and so on, which is very flexible. If the pond conditions are good, the feed fertilizer is sufficient, and the fish species are few, the aerator and high-level culture technology can be used, otherwise the stocking density will be thinner.
Patrol the pond frequently and observe the dynamics of fish in the pond. Patrol the pond every morning, noon and evening to see if the fish float before dawn and to what extent.
During the day, you can combine the work of feeding and measuring the water temperature to check the activity and feeding of fish. In hot season and sudden change of weather, fish are prone to serious floating head phenomenon. We should also patrol the pond around midnight to prevent serious floating head and flood.