Fish farming should also be able to cure fish. It is more difficult to treat fish than to treat people, because fish can't talk, and we can only see what's wrong with it from its surface symptoms and facial expressions. So we should observe carefully and be good at observing. From the fish's stool, movements, expressions, eyes and so on, we can see what happened to the fish. Fish also have expressions and eyes, which can be seen by careful observation.

When you start to raise ornamental fish, you should start to learn how to treat them. Otherwise, if the fish gets sick, it will be anxious, and it is not good to tutor the Buddha. Fish diseases are also very complicated. Some diseases can be cured quickly, while others cannot be cured. Fish, like people, have to be "preserved" for health and longevity.

My feeling is that it may be that domestic fish farmers do not choose their species, so the fish they breed are weak and easy to be infected with germs. May be the result of long-term inbreeding. Fish bought in Japan and fish bought in Singapore and Malaysia feel less likely to get sick. Perhaps local fish farmers have noticed that inbreeding is not allowed.

Fish bought in China are more likely to get sick and die than those bought in Japan, Singapore or Malaysia. Fish that have been raised for so long are also very depressed. How can domestic fish be so difficult to raise? Easy to get sick.

Sometimes the fish in the fish shop are too dense, and there are too many fish in each fish tank, so the water circulation filtration system is inefficient. Therefore, many fish constantly excrete urea, resulting in high urea in the water, and fish are poisoned after soaking for a long time. Although he did not die immediately, his internal organs were damaged. If you buy it back and put it at home, the fish will not die immediately, but will slowly weaken and finally die.

This situation is the same as people. People's internal organs will not die immediately, but will gradually weaken and eventually die before others.

Besides, most of the fish medicine I bought seems to be useless. I don't know if it's fake. The medicine used by people is also fake, and it is hard to say whether the medicine used by fish is fake or not.

But if you raise fish, you still need to learn some basic treatments for fish diseases. The fish is ill, so we can only save the fish's life ourselves.

Fish disease is threatening us. Generally, if they are not treated in time, their fish will be wiped out. It will be sad to see your fish being tossed to death by the disease.

Sometimes the children tell me not to buy any more fish, saying that it is sad to see the fish die. But I teach children how to overcome fish diseases instead of running away.

Fish medicine

Drugs that can be used to treat fish diseases are as follows:

Formalin solution, called formaldehyde or formalin in English.

This medicine is transparent and colorless, and it is a preservative. Because it has strong bactericidal and insecticidal abilities, it can be used to preserve animal specimens. It can kill bacteria and parasites, but if used in excess, it will kill fish. Therefore, generally 20 ~ 30mg/L can give fish a medicinal bath for a few minutes.

When using this medicine, remember to always pay attention to the movements of fish. If the fish is uncomfortable, such as a fish that usually swims very slowly, it must be caught immediately. The concentration of the medicine may be too high. Or if the fish doesn't swim after soaking for a while, take it out quickly and put it in clear water, because soaking for too long will kill the fish.

Potassium permanganate, the English name is potassium permanganate (KMNO 4).

This medicine is dark blue and has strong bactericidal and insecticidal abilities. However, its effect is short-lived. After this medicine was added to the fish tank, the water in the fish tank turned blue at first, gradually lost color within a few hours, and finally became transparent water. None of the fish medicine sold in the market has a name, but after using it, we can know that many of them belong to this medicine.

This medicine is not as strong as the formaldehyde solution mentioned above. Generally, putting a little more medicine didn't kill the fish, so it is a safe medicine. But it is not so destructive to bacteria and parasites, so if this medicine can't cure fish diseases, you have to use the formaldehyde solution mentioned above, which can kill bacteria and parasites.

The effective concentration of fish tank is 8 to 10mg/L. If the concentration of medicinal bath is 10 to 20mg/L, soak the fish for10 to 30min.

Malachite green, English name malachite green.

This is a green liquid, a dye. This medicine is mainly used to deal with water mold, that is, the surface of fish has a layer of white mold.

The concentration of water added to the fish tank can be 0. 15 to 0.2 mg/L. If the concentration of medicinal bath is 10 mg/L, the fish is soaked 15 to 20 minutes.

Methylene blue, English name is Methylene blue.

This is a dark blue liquid, but the color is a little different from that of potassium permanganate, because potassium permanganate is red and blue.

This medicine is seldom used. It is generally used to treat leukoplakia and cannot be used to treat other diseases.

Salt is called sodium chloride in English.

This is the salt that we use to copy vegetables. Crude salt is generally acceptable, and it is sold in the flower and bird market.

The concentration of the medicated bath can be 0.5-3%, that is, 5-30 grams of salt per liter of water. If you add a fish tank, you can add 1 g salt per liter of water.

If you can buy formaldehyde solution, potassium permanganate and malachite green, it will be enough to deal with all kinds of fish diseases.

Anyone who raises fish needs to buy some medicine for later use. Sometimes medicine is more expensive than fish, and I can't help it.

Generally, you can buy the following raw salt in the ornamental fish shop, not the raw salt used in the kitchen.

You can also buy the following medicines for fish at the fish point. Look at the name of the medicine on the package and you will know what disease it is for. It's simple. Fools can also buy it for fish therapy.

The picture below shows how many pills were put in the fish tank after changing the water. It is a drug that dissolves chlorine in tap water. English seems to be called hypochlorous acid. I don't know. Anyway, I told the fish seller to change the water and put the medicine, and he understood.

Fish disease

Fish farmers will basically encounter the following fish diseases. Of course, there are many inexplicable diseases, so I don't need to introduce them here. Anyway, prepare formalin, formaldehyde solution, potassium permanganate, malachite green and salt in case of emergency.

Common fish diseases and their treatments are as follows:

Cucumber disease

This is a very common fish disease, also called melon disease. All fish will be infected with this disease. Anyone who keeps ornamental fish should learn to see if the fish is infected with this disease. This is a white parasite that feeds on fish and sucks fish body fluids. There seem to be small white spots on the fish's body and tail, and the number of small white spots will continue to increase. If left untreated, the fish will die within a few days, and the whole tank of fish will be infected, and no one will be spared.

There are drugs for treating white spot disease in flower and bird markets, which are generally effective. This white spot disease is an easily treatable fish disease. After several hours of administration, it can be found that the white spots on the fish gradually decrease. There will be no white spots every day or two.

If there is formaldehyde solution and potassium permanganate, it can be soaked.

Use formaldehyde solution with the concentration of 20-30mg/L to bathe the fish for 65438 00 minutes.

Soak fish in potassium permanganate 10 to 20mg/l for 0 to 30min.

If there is no medicine, you can also treat it with salt.

Fu Jun, a Japanese fish farmer, said in his book that he soaked the sick fish in 6% salt water. When he knew that the fish was uncomfortable, he moved the fish to clean water to rest for a few minutes, and then moved it into salt water to soak. Soaking back and forth several times can also cure the disease.

You can also add salt to the fish tank, the concentration is about 1% to 0.5%, and let the fish stay in this concentration of salt water until they are healed.

But the water temperature should be raised a little. He didn't explain how high it was.

However, it is reported that this parasite is most suitable for living between 15C and 25C. When the water temperature is lower than 10C, the parasite stops developing. When the water temperature is higher than 28℃, most young parasites will die.

Therefore, if fish are found to be infected with this parasite, it is best to raise the water temperature above 28℃, but at this time, you should also pay attention to the breathing state of fish to avoid lack of oxygen. Because when the water temperature is above 28C, there will be little dissolved oxygen in the water, and if there are more fish, there will be a danger of hypoxia.

If the parasite can't find a host within 24 hours, it will die automatically. So you can also empty the infected fish tank for a day or two, and you can put an end to this disease.

The picture below shows a goldfish with white spot disease. You can see the white spot on the tail, which is easy to identify.

water mould

This is also a very common fish disease, also called "white disease". This is when the skin of a fish is scratched or bitten by other fish, mold takes the opportunity to multiply and spread in the injured part. Finally, the fish's body surface seems to be covered with a layer of fine white hair. This pathogen belongs to moss, so the disease is tenacious. Generally, fish infected with this disease are a headache for fish farmers. In particular, the colorful angelfish are more susceptible to this fungal disease, which may be because the skin of the colorful angelfish is more special.

You can use a brush to apply 1% malachite green solution to the diseased fish.

Fu Jun, a Japanese fish farmer, said in his book that sick fish were soaked in 2000 copies 1 formalin solution for 10 minute, then moved to fresh water to rest for about 1 hour, and then moved to formalin solution for soaking for 10 minute. Repeat this for three times, and finally raise the sick fish in 0.2% salt water. But this method may not work for seriously ill fish, which can't stand such tossing and dying.

Erythema

This is a very common fish disease, especially keeping goldfish. The fish body, tail and flag have red patches or spots, and the tail and flag have bloodshot lines. This is a disease caused by bacterial infection. If the situation worsens, the fish will die. Some fish can heal themselves, others can't. Generally, this disease is caused by the poor water quality of a large number of farmed fish.

If it's just a disease, changing water can also make the fish recover.

You can also soak the fish in 1/50000 formalin solution 10 minute.

Squamous disease

This is a rare disease, but there are also fish infected with this disease. It is said that it is caused by bacterial infection. This disease is usually infected and difficult to recover. Generally, one or two fish are infected with this disease, and it seems that it will not infect the whole tank of fish. Generally, carp and goldfish love to be infected with this disease, and other fish have never been infected with this disease. The fish infected with this disease are ugly and their scales stand on end. I'm bored when I watch it.

According to Juno Nobuo, a Japanese fish farmer, in his book, fish must be isolated immediately and all water must be replaced. But I think if there is no infection, there is no need to change them all. Only a few weak fish may be infected with this disease. Juno's method is to isolate the sick fish in clear water, control the water temperature between 25C and 30 C, and then soak the sick fish in cold water for 5 minutes. Soak in 2% salt water for 5 minutes. And then move into clear water to raise. He didn't explain clearly how cold the cold water was. If it is summer, ice cubes must be added to the water. This process is repeated several times a day until the sick fish are cured.

If you are hungry, you can also soak the sick fish in 2% salt water 10 minute. You can also add 6.5438+0.5 million to 30 million international units of penicillin per cubic meter of water. It is said that this therapy is very effective.

Rotten tail disease

This is also a very common disease. Goldfish are more susceptible to this disease. You can see that the tail of the fish is getting shorter every day, and it is getting rotten when you look closely. Some rotten tails are neat and rotten, while others are untidy. Some books say it's a parasite, and some books say it's a bacterium. I don't know anyway. You can't let the tail rot, and the fish will die if it rots. The disease is also contagious and can be passed from one fish to another. So if you find the fish rotten, you have to deal with it quickly.

I usually treat this disease by surgery. Catch the fish, take a pair of scissors, cut off the rotten part, and then put the fish back to feed. You can change half the water. Generally, if you cut off the rotten part, it will not rot again. After a few days, the fish will grow back to its original tail.

Generally, if the water quality is good and the fish are not crowded, there will be no such disease.

The picture below shows a goldfish with a rotten tail. You can see that the edge of the tail is rotten.

The picture below shows how to cut off the rotten part of the fish tail with small scissors.

poultry rearing

This disease is not common. But once infected, it will be very troublesome. Can be eliminated. I don't know if it's parasites or bacteria, but it seems that parasites are at work. The fish's body seems to have been eaten by something, and it seems to be getting worse every day. At first, the tail was rotten like a rotten tail. Then the fins on the back and abdomen were rotten. Finally, the whole body of the mouth is rotten. It can rot until the whole chin falls off, and the fish is not dead.

A fish farm was opened many years ago, and a lot of "raw fish" were raised. Later, I also contracted this disease. I was so sick that I didn't have time to see what it was. The fish were infected. The sick fish rotted quickly and died a few days later. The disease wiped out all my fish. I tried to bring the last fish home, but I died halfway, but my head was rotten and my whole chin was separated from my head.

Raw fish hardly get sick, but this disease is extremely destructive to raw fish. Especially in large-scale farming, there is a way to deal with this disease.

Since then, I haven't encountered this disease on fish for many years, and I really want to compete with this disease again.

Recently, the raw fish was ill again and was treated with salt water. So you can try soaking in 2% salt water until you recover.

You can also try formalin, which means that no matter what parasites or germs you kill. But if it is raised to eat, you can't use formalin, remember. Eat more raw fish soaked in formalin unless you want to ascend to heaven as soon as possible.