Prevention and treatment of common fish diseases this spring

This spring, all kinds of bacteria (bacteria, fungi) and pests (parasites) began to move, harming the wintering adult fish and the fish species released in winter and spring. In addition, the fish were weak after a winter's feeding, and they were easily infected with a variety of diseases. Therefore, it is necessary to do a good job in the prevention and control of various fish diseases to ensure the normal growth of fish. Common fish diseases and prevention methods in spring are:

The symptoms of vertical scale disease are rough body surface of fish, erect scales like loose balls, edema at the base of scales, and liquid outflow when slightly pressed. The control method is to flush the pond with new water at the early stage of the disease, and to soak the fish body in 3% saline for 15 minutes when stocking the fish species.

Water mold is caused by hypha parasitism of algae water mold on fish body. Disease fish skin and gills have gray mold hair, swimming abnormalities, loss of appetite, resulting in emaciated death. The prevention and control method is: do not make the fish body hurt in the process of fishing, transportation and stocking, and sprinkle 0.15 g malachite green or 2 g gallnut on the whole pool of water per cubic meter of water. In addition, fish stocking can be used 5% salt water immersion fish body for 5 minutes.

Mouth filariasis is a disease that affects fish species and is caused by floating mouth filariasis invading the gills and skin of fish. When a large number of mouth worms parasitize the skin of fish, they form a layer of blue-gray mucus. Control method is: every cubic meter of water with copper sulfate and ferrous sulfate mixture according to the ratio of 5:2 0.7 g, dissolved in water after the whole pool splash, when stocking fish can be 3% salt water immersion for 30 minutes.

Inclinohelminth disease is caused by the infestation of fish skin or gills by Inclinohelminths. A large amount of mucus secreted from the body surface and gills of the sick fish forms a light gray film, affecting the respiratory function of the fish, making it difficult to breathe and die. Control method is: sprinkle copper sulfate and ferrous sulfate, the same dosage and treatment of filariasis. In addition, fish can be soaked in 4% saline or 2.5% potassium permanganate solution for 5 minutes when stocking.

Water claw worm disease by water claw worm parasitic fish skin, gills, fins, etc. caused. There are many small white spots visible to the naked eye, and a white film covers the skin in severe cases. Sick fish swim slowly, float on the water surface, sometimes cluster pond, fish body constantly friction with other objects, soon died in batches. Control method is: 0.3g malachite green per cubic meter of water prepared into a solution to soak fish body for 2 hours, or each mu of water with 250g fresh pepper, ginger 100g decoction pool splash.