Koi don t eat and still have dark spots, what should I do?

Photo Yellow Fish Tank is a bit like a footbath, hehe, joke.

You can clearly see that the fish seems to have a lot of white spots on its body, if it is not a good photo, then it must be a white spot disease, or a melon parasite.

I hope that it is only white spots that cause malnutrition and gastrointestinal discomfort, because this is a kind of visible and common disease, and it is easy to get sick, 5 yuan white spot net medicated bath, the next day the whole tank is changed with water, and the mercury contains as little as possible The dose is low, and the concentration is high and easy to be poisoned.

The dark spots on the body are caused by intestinal absorption problems, and the chromogen cannot reach the surface scales, so they are reluctant to eat.

As for what causes enteritis, there may be a variety of factors, and you can know which one is by elimination.

1 water quality, such as poor tap water quality, 2 food, such as eating too much at one time or expired food, 3 parasites, such as intestinal parasites or too many parasites outside the body, 4 germs, such as mold, 5 poisoning, such as using drugs.

Koi don't eat and have dark spots:

1 Oral method: the agent is mixed in the feed, **nutritional disorders or bacterial diseases and internal diseases.

2. Medicated bath method: mainly to expel parasites on the body surface, **bacterial external diseases.

3 Local**:** trauma and superficial diseases of the body, local trauma**.

4 Injection**: Various bacterial diseases can be injected intramuscularly or intraperitoneally.

5 Surgery**: Plastic surgery is performed on fin trauma or deformation.

The dark spot is no problem, it seems to be a problem with the water quality.

Fast, add a small amount of salt; Rest for two weeks and change a little.

Water. I can't see the black spots.

If the white spot is white spot disease, go to the fish market to buy medicine, and you will know which one to buy as soon as you say it, you can use nitrofuracillin or methyl blue to soak in water.

Stop feeding for 2---3 days, burst oxygen, add salt, change 1/10 of the water every day, if there is no improvement, soak the yellow powder for 10 minutes a day, and it should be no problem after a week.

1. Reason: The black spots on the koi are likely to be caused by poor water quality, aging water quality or deterioration of water quality. If the water quality is too poor, bacteria can easily grow, and if the water quality is poor, the resistance of koi will also decrease, so bacterial infections and other situations will occur.

2. Method: The breeder needs to change the water immediately, but the amount of water change should not be too large, and it can be controlled at one-third of the total water volume. If possible, you can clean the fish tank and clean it again with sterilization and disinfecting drugs.

1. Reason: Black spots on koi may also be drug poisoning, such as overdose of feeding drugs or two drugs can also occur.

2. Method: Breeders need to judge according to the drugs they have used, and it is best to go to a pet hospital to seek help from a professional veterinarian.

1. Reason: The appearance of black spots in koi may also be black spots, mainly because of parasitic infection. The main symptom of pigmentation is the appearance of small black spots on the body, which may ulcerate in severe cases.

2. Method: The keeper can repeatedly increase the water temperature and use the temperature difference to kill the parasites, but the change in the temperature difference needs to be within the acceptable range of the koi. Potassium permanganate solution can also be used to clean the affected area, or potassium permanganate solution medicated bath can be used directly.

**During the period, the koi should be exposed to the sun frequently, and it is best to change one-third of the water every day.

<> when koi have black spots, most of them are caused by black spot disease, and may also be caused by parasitic infection, it is recommended to change the water quality of koi, and need to add salt and antibiotics to the water, and add oxygen to the water quality, so that the black spots on the koi gradually disappear.

1.Signs of infection.

Small black or brown spots, up to 2 mm wide, appear on the body and fins, and sometimes on the eyes and mouth.

2.Infection in detail.

Spots are cysts containing larval intestinal flukes, such as Pyrocatodes piscinatorium, which have heavy pigment. The larval stage is also known as the picodium fluke. Adult bugs live in the intestines of waterfowl, which are infested by eating fish that harbor larvae.

In the guts of the waterfowl, the membranes that surround each larva spread out, and the worms mature after a few weeks.

The eggs laid by the adult worms are excreted in the excrement of the bird, and the eggs that fall into the water develop into free-swimming larvae, which parasitize the snails.

After a few weeks, the parasite leaves the snail and begins another cycle of sending a suitable fish host. When the parasite reaches about 1 mm wide, a black membrane grows on each bug's body, forming unique spots under **. Mild black spot infection is not harmful to fish, because the life cycle and environmental conditions are complex, and black spot disease will not be transmitted from one fish to another.

3.**Method.

In general, drugs have poor penetration of the cyst, and even if drugs are used, they are basically ineffective. At this time, we can use the method of suddenly changing the temperature to make the parasite black spots on the koi fall off by themselves, because the ability of the koi to adapt to the temperature is much stronger than that of the parasite, we can change the temperature suddenly, but this temperature must be within the temperature that the koi is adapted to to operate, so that the parasite does not adapt to the sudden change of temperature, and dies and falls off.