CATDOLL : CATDOLL: tropical fish farming

Skin mold disease, also known as water mold disease and white hair disease, is one of the most common diseases of ornamental fish. [Pathogens] It is a species of Water Zero, Corythuja, Heteromyces, Aphanomyces, and Pythium. [Symptoms] When catching and transporting ornamental fish, if you are not careful, the fish skin will be injured, or parasites will invade and damage the skin. The spores of the mold will invade the wound, absorb nutrients, and germinate rapidly. One end of the hyphae will go deep into the muscle, and the other end will grow outward, forming cotton-like hyphae. When the mold first parasitizes, it is not easy to find it with the naked eye; when the naked eye can see it, the hyphae has already invaded the wound of the fish body and grown from the outside to the inside. The hyphae and the cell tissue of the wound are entangled and adhered, causing tissue necrosis. As the cotton-like hyphae increase day by day, the fish body is overloaded, causing abnormal swimming, loss of appetite, and gradual thinning, leading to death. When ornamental fish are infected with mold, they are also affected by the length of light exposure. Long periods of continuous rain or insufficient indoor lighting, sunlight, and other light sources can promote the growth of mold. Fish infected with mold usually have a layer of white film on their skin, especially black and red fish, which makes the fish lose its luster. Then the fish become sluggish and often appear sluggish, floating on the water. If not treated in time, the mold spreads on the fish, the muscles of the affected area rot, the appetite decreases, and eventually death occurs. [Treatment Methods] Skin mold disease can occur all year round, but is most common in early spring and late winter. In order to prevent the occurrence of water mold disease, care should be taken to avoid damaging the fish and parasite bites during operation, and a small amount of salt can be added to the water to inhibit the occurrence of water mold disease. When the fish is found to be infected with Saprolegniasis, it can be washed with 3% salt water once a day for 5 to 10 minutes each time, or soaked in 2 parts per million (2ppm) potassium permanganate solution plus 1% salt for 20 to 30 minutes, or soaked in 1 to 2 parts per million (1 to 2ppm) malachite green solution for 20 to 30 minutes, or soaked in 1 to 2 parts per million (1 to 2ppm) methylene blue solution for 20 to 30 minutes, or soaked in 5 parts per million (5ppm) furazolidone solution, or directly sprinkled with 0.02 parts per million (0.02ppm) malachite green solution and 0.3 parts per million (0.3ppm) formaldehyde solution into the aquarium to inhibit the growth of mold. The growth of Saprolegniasis can also be inhibited by increasing the water temperature. Installing a 15-watt ultraviolet lamp on the top of the aquarium and irradiating it for several hours a day can effectively inhibit or eliminate the growth of Saprolegniasis.