My little fish is sick and has a lot of small black spots on my body, who will tell me what to do!

If you have black spots on your body, you should have black spot disease. The head becomes smaller, all because of black spot disease.

Black spot disease, which often appears in fish farming. It can happen in any season!

Due to the large temperature difference between day and night, tropical fish in tanks without thermostats are most susceptible to black spot disease. Black spot disease is also known as small melon worm disease, after tropical fish get this disease, first grow small black spots on the gill cover and each fin, and then grow all over the body, and the mucus on the body surface increases in the later stage, and the black spots become black cyst vesicles, which seem to be covered with a layer of black membrane. Diseased fish tend to be significantly less active, floating on the surface of the water or congregating in a corner, and if not timed**, they will gradually lose weight until they die.

The melon worm is a parasite, which likes to parasitize the surface of the fish body when the temperature is 10-20 degrees Celsius, so it is most prone to disease in spring and autumn, with strong seasonality. It is very simple to deal with black spot disease, in addition to the drugs that are sold in aquarium stores for black spot disease, you can also use economical, simple and effective methods.

According to my experience, the general breeding of tropical fish tank, only need to adjust the temperature to 30 can also be 32, 3-4 days later, the black spots will disappear naturally, this is because in the water temperature above 28, small melon insects can not develop and grow, according to its short life cycle, will be able to eliminate the hidden danger of black spots. However, if it is an aquatic plant ecological tank, the water temperature of 30 will be unfavorable for the growth of aquatic plants, at this time, methyl blue and malachite green can be pressed by 1?After being configured in water, it is dripped into the fish tank, so that the water in the fish tank is slightly blue, and it can also kill small melon insects for 2 consecutive days, methyl blue and malachite green have no effect on nitrifying bacteria, and will not destroy the circulating filtration ecosystem of the fish tank, and after 1-2 days, the micro blue in the water will disappear by itself.

You can also use 1-2% salt water to soak the fish body for 10-20 minutes, and it will be better for a few days.

To prevent the occurrence of black spot disease, the key is to control the water temperature, do not let the water temperature drop below 22-25, especially in spring and autumn, we must pay attention to keeping warm at night.

Note that if it is a cold-water fish such as goldfish, it cannot be warmed up, and only medicated.

Thirty degrees warmer.

Add coarse salt (just add water with your tongue to be a little salty).

Goldfish is an ornamental fish evolved from crucian carp, which is the most ornamental fish with Chinese characteristics, and is very popular with people, but in the process of goldfish breeding, due to improper feeding and other factors, goldfish have black spots on the body, which seriously affects the beauty of goldfish.

Drug-poisoned goldfish will have dark spots on the body, such as heavy metal salt drug poisoning, the water should be changed in time, and the temperature of the water should be increased at the right time, so that the metabolism of the fish will be accelerated, so that the toxic substances in the fish body can be eliminated faster, but it should be the situation, if the situation is serious, you should go to the doctor in time to ask for medicine.

Many people don't understand why the water quality will make the body color of the fish black, and the water quality problem can be divided into two aspects, one is the aging of the water quality, and the other is the sudden change in the water quality. The former is due to high ammonia nitrogen in the water body, and the latter is due to the large seasonal temperature difference. The water quality problem is very simple, first change the water in the fish tank to see how the situation is, and at the same time disinfect and sterilize the fish tank when changing the water, so as not to leave pathogenic bacteria and do useless work, and give the goldfish a healthy and sterilized sterile environment.

Secondly, after the diagnosis, carry out targeted **, for goldfish sterilization and disinfection, you can use light potassium permanganate solution for medicated bath, the general medicated bath time is about 15 minutes, of course, during this period, it is necessary to determine the time of medicated bath according to the adaptation of the goldfish, do not fix the dead but according to the actual situation of the goldfish to be reasonable**.

Disease-led. 1. Causes: The main cause of goldfish black spot disease is that when fishing and transporting goldfish, the fish are injured by friction, and the fish body is injured by trauma or parasites so that the fish is infected by mold spores after being injured, thus inducing black spot disease.

2. Physical control: In daily life, it is necessary to do a good job in preventing black spot disease, for example, be careful when fishing and transporting, do not let goldfish be injured, and avoid being infected by parasites and bacteria. At the same time, a small amount of salt can be put into the aquarium where new fish are stocked to inhibit the occurrence of water mold, and attention should be paid to cleaning and disinfection when putting live bait, so that the water quality can be better kept clean, the growth of water mold can be isolated, and goldfish can be infected with black spot disease.

3. Drug prevention and control: If the goldfish has unfortunately been infected with black spot disease, then you can try to use 250 grams of salt and 250 grams of baking soda to splash the mixture on a 100*55*45 cm fish tank, you need to insist on a few days of medicinal bath, and the first effect is very significant. Alternatively, the body of the fish can be soaked in 100 kg of water by dissolving malachite green grams or methylene blue for 10 20 minutes, or the body of goldfish can be soaked in 2 3% salt water once a day for 5 to 10 minutes each time.

In addition, you can also use two parts per million potassium permanganate plus 1% brine mixed to soak the diseased goldfish, each soaking for about 20 30 minutes, and the effect of its ** black spot is also very obvious.

If there is any, add some mashed oxytetracycline and yellow powder into the fish tank early until the condition improves. White spot disease is a kind of parasitic disease, if the scales of the goldfish disease begin to fall off, you can use yellow powder salt, which is used to reduce inflammation. If the color change is not complete, you need to wait and see how it changes.

What is the cause of black spots on a body? The black spots that grow on the body may be ordinary pigmented nevi, which are mainly clumps of melanocytes under the skin and focal-like nodules on the subcutaneous surface. There are three types of intradermal nevi that may form a more pronounced protrusion, and there are three types of epidermal nevi and junctional nevi.

This pigmented nevus grows in large quantities in a short period of time, and it is considered that it is a clinical symptom formed after a large decrease in the body's immunity. It is also possible that polyps have grown inside the intestines, resulting in sunspot polyp syndrome.

Therefore, it is recommended to go to the local hospital to test the colonoscopy first, if there is no problem with the proctoscopy, directly choose oral multivitamin, with thymus peptide enteric-coated tablets, oral administration for several months to improve self-immunity, this black spot will gradually fade.

**Medications:

1。It can also be soaked in 5% salt water for several days;

2。or 2 parts per million (2ppm) of methyl blue solution, soaked for 6 hours a day;

3。Mixed with 0.05 parts per million (malachite green and 25 parts per million (25ppm) formaldehyde solution, the efficacy is better;

4。or soak in 28 30 parts per million (2ppm) of quinine hydrochloride solution for 3 5 days;

5。or soak in two parts per million (2ppm) of mercurous nitrate for 30 minutes;

6。or soak in a solution of red mercury at a concentration of fifty to seventy parts per million (50 70 ppm) for 5 15 minutes, 2 times a day.

**After the white spots disappear, it is still necessary to use the medicine for a period of time to kill the small melon worms that are not attached to the fish body.

Note: Malachite green is chemically known as basic green, the molecular formula is: C23H26N2, and the molecular weight is:

It can be used as a green dye in industry. However, fish diseases** are also used in many applications (especially in fisheries), which can be used for a variety of fish ectoparasites and pathogens (including: mold, bacteria, fluke infections with gills, etc.), and clinically proven effective diseases include:

White spot disease, water mold, silk mycosis, ** slime disease, etc.

Note: Red mercury is a topical drug, and soaking is also a method of external use, mainly to master the concentration and time. In the early stage, only a small part of the body can be wiped, but if in the later stage, the whole body is the same, then after dilution, rubbing is the same as soaking.

Wipe is only partial, you don't have to dilute, because wiping is to fish out the fish first, so the fish dehydration time should not be very long, dilute and wipe immediately into the water, the effect is lost, the effect is not great. So, the local part can be wiped, but it should not be diluted, and if it is the whole body, then it should be soaked. Because the whole body wipes, the gills are difficult to rub, and the operation is also difficult, and the operation will also cause trauma to the gills.

Faint to death, it is just to raise fish, so it will spoil them, don't feed them the bait, cut some vegetable leaves with scissors for them to eat, they are originally vegetarian, room temperature is good, why should you heat the rod, if you just buy the fish for half of the water and leave half, the tap water should be dried in the sun, and the fish should be changed when it is cold. Don't worry too much about white spots, just eat some vegetable leaves, you can try it, not too much at a time

Long light yellow sporangia can be seen on the head of the diseased fish, and when the cysts are mature, they are black, that is, tail wagging larvae and hind cyst larvae. At present, there is no cure, only sterilized needles or tweezers can be used to pick out the worms. Koi fish can be eaten and pulled, and the water quality requirements are high, so a set of powerful filtration facilities is indispensable.

I reckon your fish has boils.

Symptoms: The body of the fish is covered with black spots, the body of the fish is thin, it loses its luster, it swims alone and swims slowly, the body of the fish trembles, and gradually dies due to the emaciation.

Prevention and control methods: always maintain good water quality, use circulating water in the aquarium should also change the water regularly, and the feed should be disinfected first, rinsed and cleaned before feeding. 15 grams of chloramphenicol can be dissolved in each cubic meter of water.

Change the water for the fish and feed it a little pill.