A Detailed Guide to Common Diseases of Oscar Fish and Their Prevention and Treatment

Many people keep fish at home, placing them in glass aquariums in the living room and other places, where colorful or elegantly shaped fish swim back and forth, creating a special atmosphere. Many people like to keep oscar fish. Oscar fish are relatively hardy, but fish diseases can still occur if you are not careful. Let us learn about the common diseases of oscar fish and their prevention and treatment methods.

White Spot Disease

[Symptoms] In the early stage of the disease, the sick fish will rub its body against hard objects, hoping to remove the annoying pathogens from its body. Many small white spots can be seen on the body surface, fins and gills of the sick fish. The sick fish becomes thin, floats on the water surface or gathers in a corner, and rarely moves. In the later stage, the body surface looks as if covered with a layer of white film, mucus increases, and the body color becomes dull and lusterless.

[Prevention and Treatment] 1. You can take advantage of the fact that the white spot parasite cannot tolerate high temperatures by raising the water temperature to 30 degrees. This prompts the spores produced on the fish body surface to mature quickly, accelerates their growth rate, and causes them to fall off the fish body surface. 2. Treatment with red medicine. The key to this method is not to add too much; it is enough for the water to be slightly red, and less is better than more! Soak for 5 to 10 minutes, 1 to 2 times a day. We hope the above information can be helpful to everyone. If there are any inaccuracies or omissions, fish keepers are also welcome to point them out and supplement them.

Fin Rot Disease

[Symptoms] There is obvious damage at the caudal fin and tail. If not treated in time, it may spread to the base of the caudal fin and cause more serious symptoms.

[Prevention and Treatment] 1. Dissolve 1 gram of nitrofurazone or furazolidone in 10 kg of water, soak for 20 minutes, or choose a low-concentration dose for splashing, which can inhibit the spread of this disease and gradually restore the growth and development of each fin. 2. Splash treatment with a 0.01% potassium permanganate solution can effectively inhibit the spread of this disease.

Gas Bubble Disease

[Symptoms] Gas bubble disease is also one of the diseases that oscar fish are prone to, but the incidence rate is not high. The typical manifestation is that there will be many small bubbles on the oscar fish's body, mainly occurring on the pectoral fins, pelvic fins and abdomen.

[Prevention and Treatment] 1. Aerate the water, and the water temperature should be kept stable so that supersaturated oxygen in the water body can be released into the air. 2. Completely change the water and remove the old water.

Cloudy Eye Disease

[Symptoms] In the early stage, a white mist appears on the eye membrane, mostly in one eye. In the middle stage, the eyeball becomes cloudy. In the late stage, the eye swells and grows white cotton-like cone-shaped matter. If it cannot be properly handled at this time, there is a risk of death.

[Prevention and Treatment] 1. Early stage: If a white mist phenomenon is found on the eye membrane of the fish, one third of the water should be changed immediately, and an appropriate amount of coarse salt should be added at a concentration of 5 parts per thousand, that is, 1 jin of coarse salt added to 200 liters of water, and the temperature should be raised to 30 to 32 degrees C. Observe for two days to see whether it improves. If there is no worsening, then strengthen water changes, changing one quarter of the water every three days, and add an appropriate amount of salt, and it can be cured. 2. Middle stage: Then medication is needed for medicated bath treatment. Use water-soluble chlortetracycline, penicillin, or fish-specific medicine. If fish-specific medicine is used, it can be used according to the instructions. For chlortetracycline and penicillin, put 10,000 to 20,000 units per liter of water. During the medicated bath, the temperature must be raised by 2 to 3 degrees C, and observation should be carried out. Re-dose according to the duration of the medicine's efficacy, and change one quarter of the water.

[Note] If the eyeball turbidity is severe, the recovery time is slower, and it will take about three to five months to heal. If the swelling disappears, the dosage can be reduced or stopped. After recovery, the black pupil will be smaller than before, but there is no major harm.

Dos and Don'ts for Preventing and Treating Common Diseases in Oscar Fish

1. It is better to prevent before disease occurs, and avoid looking for medicine after illness. The early symptoms of fish disease are not easy to observe. By the time they are discovered, the sick fish often eat very little or stop eating, which makes medication difficult.

2. It is better to prevent regularly, and avoid following others blindly. Fish disease outbreaks have a certain periodicity. For example, in early spring and late autumn during low water temperature periods, fish are prone to saprolegniasis. In early summer and mid-autumn, grass carp and black carp are prone to the old "three diseases." In summer during high water temperature periods, it is the high-incidence season for explosive fish diseases. Based on this regularity of fish disease occurrence, prevention can be carried out in advance.

3. It is better to prevent comprehensively, and avoid using a single medication. Fish disease occurrence is the result of multiple factors. Therefore, fish disease prevention must target various pathogenic factors, adopt comprehensive measures, inhibit pathogens, improve the water environment, and enhance the disease resistance of fish. This includes thorough pond clearing, fish seed disinfection, regular water injection and application of quicklime, scientific fertilization and feeding, and regular oral and external treatment.

4. It is better to disinfect at low temperature, and avoid medicated baths at high temperature. Medicated baths are an important method for preventing and treating fish diseases. Generally, they are carried out in wooden buckets or wooden basins during low-temperature seasons when stocking fish seeds. Using this method in summer, because the water temperature is high and the effect of the medicine is enhanced, is very harmful.

5. It is better to rotate medications, and avoid using a single medication. If only one medication is used in the water body to prevent and treat diseases, various pathogenic bacteria and parasites of fish will develop drug resistance, reducing the medication effect. Rotation and mixed medication should be actively promoted, but acidic drugs and alkaline drugs should not be mixed.

6. It is better to use medication at the right time, and avoid using medication at any time. The effectiveness of fish medicine, especially the effectiveness of drugs splashed over the whole pond, is closely related to water mixing, dissolved oxygen, and light. High water temperature, abundant dissolved oxygen, and strong light can speed up the onset of the medicine and improve its efficacy, reducing side effects. Therefore, prevention and treatment medication should preferably be carried out on sunny afternoons.

7. It is better to use an appropriate amount of medication, and avoid arbitrarily increasing the dosage. The dosage of various fish medicines is determined after repeated experiments, and can effectively prevent and treat fish diseases with small side effects. If used excessively, it will not only increase costs, but may also cause drug damage.

8. It is better to use non-metal containers to store and dissolve drugs, and avoid metal containers. Fish medicines are mostly chemically synthesized drugs, and their chemical properties are not very stable. They easily undergo chemical reactions with metals, and their composition and properties change. Therefore, ceramic, wood, plastic and other non-metal containers should be chosen for storing and dissolving fish medicines.