How to distinguish white spot disease

Many people in our lives like to keep some small pets, such as goldfish and other fish pets, which are loved by many people because they are easy to keep and have strong ornamental value. However, these fish are prone to viral infections. The most common one is white spot disease. Pathogens invade the bodies of fish and cause small white spots to appear on their bodies. This is very harmful to fish. The following is an explanation of white spot disease.

1. Causes of White Spot Disease

1. There is an invasion of pathogens, and the white spot disease is caused by the melon seed moth. Adding new fish to the tank and feeding fresh bait are the main ways for pathogens to invade.

2. The environment suitable for the outbreak of melon seed worms is when the water temperature is between 15 and 28 degrees and the water quality is deteriorating, which is the most suitable time for the outbreak of melon seed worms.

3. The fish is weak. All fish diseases start from weak fish.

2. How to judge white spot disease

Many people cannot distinguish between white spot disease and pinky mildew. You can easily distinguish them by paying attention to the following points. In the early stages of white spot disease, fish will obviously swim frantically and rub the tank. This phenomenon does not occur in powdery mildew. The white spots of white spot disease are larger than those of powdery mildew, and are more evenly distributed than those of powdery mildew.

3. Misunderstandings and pros and cons of the treatment of white spot disease

Method One: Heating method. The advantage is that it does not require medication and will not cause drug damage to fish. The disadvantage is that when the fish is seriously sick and weak, heating will accelerate the death of the fish.

Method 2: Drug treatment. The most effective drug for killing Ichthyophthirius is mercurous nitrate, which takes effect in one day. The disadvantage is that the dosage of this medicine is extremely small, and it is difficult to control the dosage for home fish farming. Mercurochrome is also effective against Ichthyophthirius multifiliis. The general dosage is 2 drops for 10 kg of water. It starts to take effect in 2 days and causes less harm to fish, making it more suitable for home breeding.

4. Misunderstandings about the treatment of white spot disease

1. Add salt: Practice has shown that salt is ineffective against Ichthyophthirius punctatus. Instead, it will stimulate the massive reproduction of Ichthyophthirius punctatus and aggravate the disease.

2. Randomly use copper sulfate and dichlorodiphenyltrichloroethane insecticides: Practice has shown that these drugs are ineffective against small melon seed worms, but can easily cause drug damage to fish.

3. Blindly changing water: It is not that the water of fish infected with melon seed worm disease cannot be changed, but attention should be paid to the amount of water changed and the temperature difference of the water. Blindly changing water will only accelerate the death of sick fish and worsen the condition.