Why do fish in fish tanks always have white spots and rotten tails?

Why do fish in fish tanks always grow white, and the water quality of rotten fish tanks is problematic?

Rotten tail disease is a common disease, which often occurs in freshwater fish such as grass carp, channel catfish, eel, fugu obscurus, carp and crucian carp cultured in fish ponds, aquariums, cages, fences and reservoirs. As long as the fish tail is scratched or damaged by parasites, the fish body resistance is reduced, the water quality is dirty, the culture density is high, and there are many pathogens in the water, which is easy to break out and cause a large number of fish species to die; Adult fish will also suffer from this disease, but the mortality rate is generally low.

The pathogen of white spot disease is caused by protozoan gourd invading the panel or gill of fish. It is a kind of ciliate in the protozoa of Cucurbita. Microscopically, the adult has a horseshoe-shaped nucleus. Young fish only have large round, oval or rod-shaped nuclei. Insects are soft and plastic, and their shapes are changeable. The disease is one of the most common frequently-occurring diseases of ornamental fish, which is characterized by rapid infection, wide epidemic and great harm.

Prevention of rotten tail disease

The following are common prevention methods:

◆ Keep the living water environment clean;

◆ The stocking density should be appropriate;

◆ Strengthen management, keep the water temperature at around 20℃, and feed less and better;

◆ Change some fresh water frequently, remove the residual bait in time, and regularly remove the dirt at the bottom of the pool;

◆ Sprinkle quicklime regularly to make the pool water weakly alkaline.

Control of white spot disease;

Because cucurbitaceae plants are not resistant to high temperature, they generally stop developing above 25℃ and die naturally when the water temperature rises to 28~30℃. Therefore, for tropical fish with white spot disease, the treatment is not too troublesome. As long as the water temperature is kept at about 28~30℃, all the cysts on the fish body will fall off after one week. If drug treatment is supplemented at this time, the effect will be better. When taking medicine, 0. 1ppm mercurous nitrate can be used as a medicinal bath in the fish tank. For seriously ill fish, 2ppm mercurous nitrate or 0.5ppm malachite green solution can be used to invade and wash the sick fish for 2-3 hours. When the symptoms of sick fish disappear, fresh water should be replaced in time to avoid fish mercury poisoning for too long. To prevent this disease, just keep the water temperature above 25℃. When introducing new fish, it is generally possible to prevent the occurrence of white spot disease by soaking it in potassium permanganate solution or salt water for disinfection and then putting it into a fish tank. Usually, the water temperature is raised to 32℃, and the cure rate can reach above 90% by drug treatment. If treated in time, the cure rate can reach 100%. Soak in 1% saline or gentamicin for about 15 minutes, once a day for several days. Or soak in 2ppm methyl blue solution for 6 hours every day; Or soak in quinine hydrochloride solution at 28 ~ 30℃ for 3 ~ 5 days, and good results can be obtained.

Why do the fish in my aquarium always die? Change the water in the sun more, don't feed it too often, and increase the oxygen.

Why does the cleaner in the fish tank always bite the fish? Scavengers suck fish in two ways:

1, the mucus on the fish surface increases, and the scavenger will suck the fish. It often happens at the beginning of new fish entering the tank or when the water quality changes, resulting in a large amount of mucus secreted by the fish in emergency response or excessive mucus secretion on the body surface when the fish is sick. This phenomenon will disappear naturally when the fish is in good condition.

2. Scavengers have become the habit of sucking fish, and they often chase and suck fish, which is more harmful to fish. Such a scavenger should be fished out in time.

Note: scavenger fish has the habit of sucking other fish, so the scavenger is only suitable for mixed culture with fast-swimming fish, and is not afraid of it sucking fish.

There are white spots in the fish tank. Why do still fish swim on the water? It may be drug poisoning, or the water quality may have changed because of the reaction of drugs. It's hard to say, it depends on the state of the fish!

Why does my fish always get white spot disease? Water pollution problem

Why do the fish raised in the fish tank still pull the fish excrement with the slender rotten tail? How to treat this kind of fish is difficult to treat, because the sick fish is weak, and if the medicine is not used properly, the fish disease will be more serious. Fish diseases are mainly caused by long-term poor water quality. Clear water does not mean that there is no ammonia toxicity in water. The key to raising fish well is filtration, that is, filtering fish feces. Toxins in water are all produced by fish feces. Only by removing ammonia from fish feces can we maintain the stability of water, which is more suitable for fish to survive, and fish can be healthy and less sick. If there is a lack of nitrifying bacteria attachment area in the tank, there will be less nitrifying bacteria, fish manure can not be treated in time, and the ammonia content in the water will be high. If fish live in ammonia-poisoned water for a long time, their physique will gradually weaken and they will be easily attacked by viruses in the water. Some hazards are not manifested at once, but have a process of accumulation, generally starting from fish with weak constitution. Baidu Yongqing filter, this filter system has the function of automatically cleaning fish manure, which will be helpful.

Can the fish in the hotel aquarium still be eaten? Can the fish be eaten when it is rotten? Is it poisonous? Rotten fish tails are mostly caused by parasites or trauma or infection. As long as it is cooked, it can still be eaten.

Why does arowana always jump into the fish tank? Arowana is a kind of easily frightened fish. People often walk outside the tank, or the TV flashes. Will cause arowana to jump out of the tank. Therefore, it is better to add a cylinder head to the dragon tank, otherwise it may jump out of the tank and suffocate.

Why do goldfish in the fish tank at home always sleep these days? The abnormal behavior of fish often means the change of water quality. It is best to check the main physical and chemical indicators to find problems.

Why does red crucian carp always tilt its head in the fish tank? Its head touches the water and breathes. The floating head caused by hypoxia can be solved immediately by pumping oxygen or changing water.