CATDOLL : CATDOLL: What should I do if there are white spots on my fish?

1. What should I do if there are white spots on the fish?

For white spot disease, if you have a heating rod, just do the three old things: raise the temperature (to 30℃), add salt, and change the water.

If there is no heating rod, use medicine, white spot cleaner, mercurous nitrate solution, mercurochrome solution (mercuro red solution)

When the white spot disease reaches the extent shown in the picture, it is considered serious.

2. What are the white spots on goldfish’s bodies?

White spot disease (Ichthyophthirius punctatus)

In the early stage of infection, white spots are distributed on the chest, back, tail fin and skin of the fish. At this time, the fish will continue to forage as usual. After a few days, white spots will be all over the body, and the fish will lose the ability to move. They often appear sluggish, float on the water surface, swim slowly, have poor appetite, lose weight, and have bleeding spots on the skin. Sometimes they will swing left and right, and swim sideways quickly next to the aquarium wall, water plants, and sand and gravel to scratch themselves, and gradually lose balance while swimming. The course of the disease is generally 5 to 10 days. The infection speed is very fast. If the treatment is not timely, it can cause a large number of deaths in a short period of time.

The suitable water temperature for Ichthyophthirius spp. is 15-25℃. This disease often occurs in early winter, late spring and rainy season, especially in the absence of light, low temperature and lack of live bait. When the water temperature rises to 28℃, Ichthyophthirius spp. will begin to die.

[Prevention and control methods] Take advantage of the weakness of Ichthyophthirius spp., which cannot tolerate high temperatures, and raise the water temperature to around 32 degrees, and then use drugs for treatment. Usually, the cure rate can reach more than 90%. If the treatment is timely, the cure rate can reach 100%.

The treatment effect is better if the surface is treated with a mixture of 0.05 parts per million (0.05 ppm) malachite green and 25 parts per million (25 ppm) formaldehyde solution. It can also be treated by soaking in 1% salt water for several days, or in 2 parts per million (2 ppm) methyl blue solution for 6 hours a day.

You are raising goldfish, and you cannot raise the water temperature to 32 degrees, so you can only use medicine, and the medicine above will do. You can also go to the fish market to buy white spot cleaner, which is a medicine specifically for treating white spot disease, and the effect is remarkable.

3. Why do fish have white spots on their bodies?

It should be white spot disease, this disease often occurs in fish farming. It can appear in any season!

Due to the large temperature difference between day and night, tropical fish in fish tanks without constant temperature equipment are most susceptible to white spot disease. White spot disease is also known as Ichthyophthirius punctatus. When tropical fish are infected with this disease, tiny white spots first grow on the gill covers and fins, and then spread all over the body. In the later stage, the mucus on the body surface increases, and the white spots become white cysts and bubbles, as if covered with a layer of white film. Sick fish often have significantly reduced activities, floating on the water surface or gathering in a corner. If not treated in time, they will gradually become thinner and eventually die.

Ichthyophthirius is a parasite that prefers to live on the surface of fish at temperatures between 10 and 20 degrees Celsius, so it is most likely to develop in spring and autumn, and has a strong seasonality. It is actually very simple to deal with white spot disease. In addition to using drugs that are sold in aquarium stores to treat white spot disease, you can also use economical, simple and effective methods.

According to my own treatment experience, for fish tanks that usually keep tropical fish, you only need to adjust the temperature to 30℃ or 32℃. After 3-4 days, the white spots will disappear naturally. This is because the Ichthyophthirius cannot develop and grow in water temperatures above 28℃. According to its short life cycle, the hidden danger of white spots can be eliminated. However, if it is an aquatic plant ecological tank, a water temperature of 30℃ will be detrimental to the growth of aquatic plants. At this time, you can use methyl blue and malachite green in a 1:1 ratio to mix with water, and then drip into the fish tank to make the water in the fish tank slightly blue. After 2 consecutive days, the Ichthyophthirius can be killed. Methyl blue and malachite green have no effect on nitrifying bacteria and will not damage the circulating filtration ecosystem of the fish tank. Moreover, after 1-2 days, the slightly blue in the water will disappear by itself.

To prevent the occurrence of white spot disease, the key is to control the water temperature and do not let the water temperature drop below 22-25℃, especially in spring and autumn. Be sure to keep warm at night.

4. What does it mean when fish have white spots?

If there are white spots on the fish's body, it means it has white spot disease.

Treatment method:

1. Sprinkle the whole pool (tank) with 0.05-0.1g of mercurous nitrate per cubic meter of water. Or when the water temperature is below 15℃, put 0.01g of mercurous nitrate in 50kg of water, bathe the sick fish for about 0.5-1 hour, then wash with isothermal new water, put it back into the disinfected new pool (tank), add a little green water and let it rest. However, it should be noted that mercurous nitrate is highly toxic and should be used with caution. In particular, small fish are less resistant to the liquid medicine than large goldfish, so the concentration of the liquid medicine should be appropriately reduced and the immersion time should be appropriately shortened.

2. Put 0.5-1 ml of red mercury (i.e. medical red solution) in 10 kg of water, and bathe the sick fish for 5-15 minutes. If it is pure, you can directly rub the local or whole body with red mercury. Then wash it with new water, and then feed it in clean new water. You can also sprinkle 3-5 (g) ml of red mercury per cubic meter of water (i.e. 1000 kg) to make the pool (tank) water concentration 3-5 mg/L. After 2-3 days, depending on the condition of the disease, you can use the above bathing method for treatment once, and then change to clean new water (fresh green water) for feeding. At the same time, extend the sunshine time, appropriately increase the water temperature, stop feeding, and increase oxygen to obtain satisfactory results.

3. As the Ichthyophthirius multifiliis cannot tolerate high temperatures, place the fish in the sun. When the water temperature is raised to 30°C, rub red mercury all over the fish's body. Then rinse it with new water and place it in clean, isothermal, tender green water. Stop feeding it and expose it to the sun for a week, then replace it with new water and it will be cured.

4. When the water temperature is between 20 and 26 degrees Celsius, use 0.3 or 0.4 grams of malachite green solution to bathe the sick fish for 2 hours per cubic meter of water (1000 kilograms). This can kill the Ichthyophthirius multifiliis and is also relatively safe for goldfish.

5. White spots on fish

There are Ichthyophthirius punctatus in the water. It is caused by the entry of pathogens and low water temperature. What kind of feed do you feed? Is it nematodes? That kind of worm can easily make fish sick. It is better to feed pellet feed instead.

Solutions to white spots and white hair on fish:

1. Place the fish tank indoors, or heat it appropriately. Do it slowly and not too suddenly, otherwise the fish will not be able to bear it.

2. Put some mercuric nitrate in the water. It is sold in the fish market, about 2-3 yuan per bottle. Use it according to the instructions on the bottle. At the same time, you can put some yellow powder (furancilin). The water will be a little yellow, which is okay. Use the medicine for three consecutive days, and then change the water by one-fifth every day until the water is no longer yellow. Furancilin and mercuric nitrate can be mixed, and there are no side effects. But please remember: Furancilin and methyl permanganate must not be mixed. Chemical reactions will occur and the water will be very turbid. Therefore, methyl permanganate must not be put or brought into the tank where yellow powder has been used. Furancilin focuses on treating white hair disease, mercuric nitrate focuses on treating white spot disease, and methyl permanganate focuses on disinfection. If you use methyl permanganate, you can only fish it out and use it alone. After use, you must use the water scooped out of the tank to pass it (soak it) before you can fish it back to the original tank. The time for soaking the fish with methyl permanganate must be short, not more than two minutes, because the power of the drug is very strong.