Rescue of "toxic water disease" of three kinds of fish

Excessive dissolved oxygen in water will cause eutrophication of water, so that fish bubble disease and other diseases. Fish gills adhere to many small bubbles, so that fish floating or swimming when losing balance. Fish intestines have white bubbles, or fish body surface, fins, gills with more bubbles, fish floating on the surface, serious fish can cause mass death. When bubbles appear in the fish pond, firstly, clear water should be injected quickly, and part of the pool water should be discharged at the same time. The fish with mild disease can discharge bubbles in the clear water; secondly, 400~600 grams of salt should be sprinkled on each mu of water surface; thirdly, the fish should be quickly transferred to a new water environment.

Metal poisoning water disease occurs in new fish ponds, fry and fingerling multiple. Due to the pollution of heavy metal salts and other substances in the pool water, or lack of certain nutrients (calcium and vitamin C, etc.), the nerves and muscles of the fish are stimulated and deformed, the body of the sick fish is bent, the operculum is depressed or the upper and lower jaws of the mouth and fins are deformed (also known as bending body disease), and the sick fish grows slowly, thin, and dies when it is serious. Because adult fish generally do not have this disease, it is best to raise adult fish for 1~2 years in new fish ponds, and then put@#@233@#@seedlings or fingerlings. The diseased fish ponds should be changed frequently to improve the water quality, and at the same time, nutrient-rich feed should be fed to quickly strengthen the constitution of sick fish.

If the oxygen in the water falls below the minimum physiological requirements of fish, fish can suffocate and die. If not rescued in time, it will cause a large number of fish to die. In view of this situation, it is necessary to properly master the stocking density, and reduce the feeding and fertilization appropriately when encountering sultry weather. In winter, the pond bottom is dredged to prevent excessive silt from affecting the water quality. Aerators should be installed in high-yield fish ponds to increase oxygen regularly. Feed quality, quantity, timing and positioning should be achieved, and the residual feed in the food field should be removed in time. Fresh water should be poured into the floating head of sick fish immediately. The water inlet should be covered with reed mat or wooden board to prevent water from rushing directly into the bottom of the pool and stirring up silt. If necessary, fish can also be transferred to ponds, or chemical oxygenators can be used for oxygenation.