CATDOLL : CATDOLL: Goldfish's problem...

Goldfish question...

Skin mold disease - also known as Saprolegniasis and white hair disease, is one of the most common diseases of ornamental fish.

[Pathogens] They are species of the genera Aquamarine, Corymbia, Heterostigmus, Aphanomyces, and Pythium.

[Symptoms] When catching and transporting ornamental fish, if you are not careful, the fish's skin may be injured, or parasites may invade and damage the skin. The fungal spores may 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 a cotton-like hyphae. When the fungus first parasitizes, it is difficult to see with the naked eye. By the time you can see it with the naked eye, the hyphae have already invaded the fish's wound and grown from the outside to the inside. The hyphae will entangle and adhere to the cell tissue of the wound, causing tissue necrosis. As the number of cotton-like hyphae increases day by day, the fish body is overloaded, causing abnormal swimming, loss of appetite, and gradual weight loss, leading to death.

When ornamental fish are infected with mold, they are also affected by the length of time they are exposed to light. Long periods of continuous rain or insufficient indoor lighting, sunlight, and other light sources can promote the growth of mold. The skin of fish infected with mold is usually covered with a layer of white film, especially black and red fish, which is most obvious, thus losing the luster that the fish should have. Subsequently, the fish become sluggish and often appear sluggish, floating on the water surface. If not treated in time, the mold on the fish will spread, the muscles of the affected area will rot, the appetite will be lost, and eventually death will occur.

[Treatment Method] Dermatophytosis can occur all year round, but is most common in early spring and late winter. In order to prevent the occurrence of saprolegniasis, 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 saprolegniasis. 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 splashed into the aquarium with 0.02 parts per million (0.02ppm) malachite green solution and 0.3 parts per million (0.3ppm) formaldehyde solution 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.

Goldfish problem?

This is white hair disease, also known as water mold disease, which is mostly caused by water quality, especially household tap water. Tiny microorganisms in the water can live on the fish and cause ulcers. However, it is usually too late to treat when it is discovered.

So when you buy fish, you should try to check whether it has any wounds or small white spots on its body.

In addition, the water must be exposed to the sun before it can be used to raise fish, which can kill the bacteria in the water.

Adding a little salt to the water can kill bacteria. It can prevent the occurrence of this disease and also has the effect of curing it. However, the effect on goldfish is not very obvious, but it is very effective for tropical fish, because I have tried it~

You can also consider fish medicine. I recommend you buy a fish medicine called "Japanese God Water", which comes in a small bottle. When I bought it, it said it could cure various skin diseases of fish. When I bought it, I found that it was very useful as a preventive medicine. I added some after each water change, and the fish almost never got sick. They were very healthy and had bred for several generations. I also bought mercurous nitrate, but the drug was too strong and the fish were killed. After several painful experiences, I stopped using it. But you can choose according to your own situation.

Just consider this as a lesson learned. I wish you good luck in fish farming and healthy fish!