Prevention and control of water mildew in fish

Water mildew is commonly known as skin mildew and white disease. When the water mold is first parasitized in the fish, there is generally no anomaly in the fish with the water mold. When the disease is seen, the water mold mycelium has invaded the wound of the fish and grows outward. If the fish is injured due to careless operation during transportation, frostbite caused by low temperature, or primary focus caused by bacterial infection or parasites, the motile spores of water mold invade from the wound of the fish and absorb nutrients from the skin. it propagates rapidly in the focus of fish injury, spreads and spreads and grows into cotton-like hyphae. The mycelium was entangled and adhered to the wound tissue of the fish, resulting in skin ulceration and tissue necrosis. at the same time, with the expansion of the area, the fish was overburdened, swimming abnormalities, loss of appetite, weight loss, and eventually died of illness.

fish

The harmful objects and epidemic conditions of water mildew: water mildew occurs in the season when the water temperature is lower than 20 ℃, and it is most popular in early spring and late winter. The choice of water mold for parasites is very loose, and there is no designated object. All kinds of farmed fish from eggs to adults can be infected by water mold. Closely raised overwintering ponds, lean spring fish ponds or hungry fish are all prone to water mildew.

Prevention and control methods:

Prevention: fish should be as careful and careful as possible in the process of entering the pool, so as not to injure the fish. Before entering the pool, dilute the "seedling soaking agent" with water at the ratio of 1 stroke 5000, put the fish into the medicine bath for 3 minutes, then put the fish into the pond, and sprinkle the whole pool with "germicidal red" according to the water depth of 1 meter per mu of water. Do not handle farmed fish when the water temperature is below 15 ℃, so as to avoid bruising and frostbite.

Treatment: water depth of 1 meter per mu of water is sprinkled with "germicidal red" 100,125ml in the whole pool.