Why do goldfish die soon after they have white spots on their bodies?

1. Bacterial tail rot and fin rot: Tail rot and fin rot caused by bacteria are extremely contagious, starting from the fin bars and then rotting the body to death. There are two symptoms of this type of rot fin disease, the first one starts to rot at the edge of the fin and then extends inward, and the second one starts from the fin ** part and spreads in all directions.

The affected area turns white and eventually falls off. Goldfish are most susceptible to the disease when their body becomes less resistant after transportation or spawning. Once the diseased fish is found, it must be isolated immediately and treated with antibiotics or drugs such as dingline yellow to ** the diseased fish.

When the symptoms of rot appear slowly, the best way to do this is to replace part of the tank water, clean the filter and add a little salt to the tank, and stop feeding for a few days. Table salt** works by increasing the specific gravity of water, changing the osmotic pressure in the water, and killing bacteria and other pathogens through the change in osmosis. You can also directly use the commercially available Sera Antibacterial Anti-Insect Anti-Insect Agent, American Sterilizer, Queen Whale Anti-Bacterial Anti-Goldfish Disease Anti-Agent, Queen Whale Anti-bacterial Anti-Bacterial Agent and AZ00 Anti-bacterial Agent**.

2. Bacterial gill disease: Goldfish infected with bacterial gill disease, the initial symptom is loss of appetite, often stop under the water surface, and shortness of breath, if the posterior edge of the gill cover is lifted, you will see white broken strontium filament. Especially in crowded fish tanks, when the water quality deteriorates, goldfish are most susceptible to this disease, and it is highly contagious, so it is necessary to isolate the diseased fish.

**The method and agent of this disease are the same as bacterial tail rot and fin rot, but salt needs to be added to the water (2 grams of table salt per 100 liters of water) to reduce the loss of goldfish body fluid from rotten strontium filaments to the fish, resulting in dehydration and death of goldfish. Fungi can also cause strontium rot, so it is important to improve water quality so that the disease can be controlled. Strontium disease can be prevented by removing suspended particulates from the filter, preventing the growth of bacteria and fungi, and keeping the tank water clean.

3. Standing scale disease: In the aquarium, it is often found that the scales of goldfish protrude and fall off due to disease. Most of the scales of the diseased fish will almost all stand up, and only a few diseased fish will have partial scales, and if the body surface of the diseased fish is rubbed, the loose scales will fall off one after another.

The causative agent causing the disease is unknown, but it usually occurs in winter and summer when water temperatures are low. The mortality rate of this disease is high, and if detected early, antibiotics such as Sterilin and AZ00 can also be used to disease. The disease is not contagious, but caring for sick fish is quite troublesome.

The symptom in goldfish is called erythema. This is because of water pollution. The bottom sand has not been washed for too long.

Or diseases that you get from not changing the water for too long. Because goldfish eat dorado. So it is very polluted water quality.

If the filtration system itself is not good. It's a very common occurrence of this disease.

Erythema is an inflammation or ulceration of the epidermis. It is a disease infected by bacteria. Usually caused by Pseudomonas erythematosa.

Ichthyophilus. Vibrio ichthyosis. Aeromonas.

Infection with columnar mucus. When the waste in the water accumulates to a very high level. Healthy fish are disrupted by their natural defenses against bacterial infection.

At this time, many small red colors appear on the fish at the beginning. If left untreated, it will enlarge into red patches. Similar to subcutaneous bruising.

If it is more severe, it will break the skin and bleed. The location of the erythema may be part of the body. It is also possible that there will be redness on or below the whole body, and sometimes there will be local suppuration or ascites on the side of the body.

At the beginning of the disease, the fish still appear to behave very normally. But if not quickly**. The red spot can quickly spread and can kill the fish.

In severe cases, capillary congestion or bleeding throughout the body looks bloody. The best** method is at the beginning of the disease. Change the water extensively and clean the bottom sand and filter.

It usually heals without medicine. But when it is more severe. Sick fish will be healed by isolating with yellow powder medicated bath, usually change the water, add some coarse salt appropriately, and prevention is the main thing.

That's because you didn't control the water temperature of the new water and the old water when you changed the water, the fish were locally congested, keep the water temperature constant, the water temperature of the new water should be 1 degree higher than the old water temperature when changing the water, the new water should be injected slowly, don't pour it in one breath, apply some red mercury to the wound, put two thousandths of salt into the water, reduce the amount of feeding, change one-fifth of the water in three days, so that the control will be fine for about two weeks.

1. It is best not to choose a round fish tank when raising goldfish, which will affect its activities in it, and the water should be changed every 5 days.

2. The water temperature of goldfish should be suitable, not too low, not too high, if the current ambient temperature is too low, you can add a part of hot water in it, and the water temperature is about 20 degrees.

3. In spring and autumn, goldfish is the most appetizing time, in the case of keeping the water temperature suitable, try to make the fish full, in summer, the temperature reaches more than 30 degrees, the appetite of the goldfish will be weakened, so feed to about seven or eight percent, and the time should be early to about 7 o'clock in the morning.

4. The fish tank should be cleaned regularly, once a week, to keep the living environment of the fish clean, and to maintain the stability of water quality, and an aerator should be placed in the fish tank to supply oxygen.

Black spot disease on goldfish cannot be cured by itself, because black spot is caused by mold invasion or bacterial infection after fish scale damage, and it will not heal itself without **.

Goldfish can be transmitted to other fish, so keepers need to isolate the diseased fish immediately when they find that they have black spot disease.

If the condition of goldfish black spot disease is not severe, some coarse salt can be added to the water to sterilize**. If the condition of black spot is more severe, it is necessary to use a malachite green medicated bath**.

1. Trauma: Black spots on goldfish may be caused by traumatic infection, such as in the process of fishing or transportation, fish scales are damaged, resulting in bacteria and mold invading their body surface, and the shed will suffer from black spot disease.

2. Frightened: After being frightened, black spots will also appear on the body of goldfish. In addition, black spots will also appear when goldfish enter a new environment or the environment changes suddenly and greatly.

However, such chain dark spots are not pathological and can be cured as long as they recover from the frightened emotions.

White spot disease, which is mainly due to the sharp change in the water temperature of the fish, leads to a decrease in the immunity of the fish, and it happens that there are eggs of small melon worms in the water body, when the fish physique declines, and the water temperature is lower than 23 degrees Celsius, the small melon worms will attach to the fish body and multiply in large numbers, and the fish will have white spots, weak physique, and if measures are not taken in time, death will occur.

Dark spots, in general, refer to water mold. It is mainly due to the obsolescence of the water body and the breeding of germs. In the process of transportation, fish are injured and infected due to collisions and fights.

Why do goldfish have dark spots?

It must be sick, and this is also the case in my family, so let's treat it quickly.

If you didn't have it before, it was an emergency response that did not adapt to the new water temperature and water temperature, and it would be good to get used to it in a few days, and feeding was not recommended during the period