What is the cause of water mildew? How are the symptoms? How to treat fish with water mildew?

The overwintering season of fish is the epidemic season of fish disease in winter. in the presence of pathogens, diseases such as water mildew are easy to occur at low temperatures, and sometimes seem difficult to prevent. How to treat the fish with water mold? What are the symptoms?

Pathogen

Among the fungal diseases caused by water mold, there are more than ten kinds of water mold found on the body surface and eggs of freshwater aquatic animals in China, of which the most common are water mold and cotton mold. Water mold has a wide range of adaptation to temperature and has no selectivity for aquatic animal species. All injured bodies and eggs can be infected and cause disease. Often parasitic in the wound to absorb skin nutrients after rapid germination, outward growth, hyphae into the muscle, outward growth of cotton hair, so that tissue necrosis.

Popular situation

Water mildew, also known as skin mildew or white disease, occurs all the year round. The water temperature of 10-15 ℃ in early spring and late winter is the most popular. The disease is serious and suitable for low temperature reproduction. All kinds of aquaculture animals are susceptible to infection, which often brings serious economic losses.

Symptom

Most of the diseased fish have abnormal swimming, loss of appetite and dull movement. there are water mold parasitic in the head, snout, tail, torso or fin, and sometimes even in the Gill, and adhere to sludge and algae, such as covered with cotton wool. Finally, thin and die.

Treatment method

1. If the number of diseased fish is small and can be operated locally, it can be soaked in iodine-containing disinfectant, such as 20mg/L povidone iodine solution, or 2mg/L potassium permanganate mixed with 1% salt water for 20 minutes for 30 minutes.

2. Or sprinkle the whole pool with 800mg/L 's salt and baking soda mixture (1:1)

3. Or take antibiotics (such as sulfonamides) internally to prevent bacterial infection

4. Other kinds of fish medicine for preventing and curing water mildew disease are common in the market.

Prevention and cure measures

1. Removing excessive silt and thoroughly cleaning the pond with 20-30kg / mu quicklime can reduce the incidence of the disease.

2. Operate carefully during fishing and transportation to avoid injury to the fish. It is best to soak the povidone iodine solution 20 mg / L for 15 minutes for 20 minutes.

3. When the parent fish is injured, smear the fish body with 1% potassium permanganate aqueous solution, iodine and so on. In severe cases, streptomycin sulfate can be injected intraperitoneally or intramuscularly according to 5-100000 units / kg fish.

4. Sprinkle or rinse all over the pool with 4/10000 salt and baking soda mixture

5. In the case of single water mildew, salicylic acid alcohol solution, dithiocyanomethane solution or gallnut powder can be sprinkled or soaked in the whole pool, and the dosage can be referred to the product manual. If it is a mixed infection, it should be handled flexibly according to the actual situation.

How is goldfish water mildew treated?

1. Sprinkle 250 grams of salt and 250 grams of baking soda on the 100cm × 55cm × 45cm fish tank and stick to it for several times, the effect is remarkable.

2. Dissolve 0.3 grams of malachite green or methylene blue in 100 kg water and wash the fish for 10-20 minutes. The mycelium can be seen to fall off after a few days. 1.2% Mel 3% brine, once a day, 5-10 minutes each time.

3. The malachite green solution of 1/1000000 to di (1-2ppm) is soaked for 20-30 minutes every day.

4. Mix 2/1000000 (2ppm) potassium permanganate with 1% salt water and soak the diseased fish for 20-30 minutes.

5. Increase the water temperature to restrain the growth of water mold. And a 15-watt ultraviolet lamp can be used for several hours a day to effectively inhibit and eliminate water mold.

Whether it is the prevention of water mildew or the treatment of water mildew, it is mainly disinfection, disinfection to the water body, disinfection to diseased fish, as long as the germs are eliminated, then the goldfish water mildew will be improved.