CATDOLL : CATDOLL: The goldfish's body has turned black all over. What's going on? A few days ago, white spots appeared on their bodies. The skin was almost worn off. I gave them more medicine. The medicine seller has to say

1. The goldfish's body has turned black all over. What's going on? A few days ago, white spots appeared on their bodies. The skin was almost worn off. I gave them more medicine. The medicine seller has to say

The water temperature cannot be too high. Your fish disease is a bit like Ichthyophthirius. Is the medicine you use mercuric nitrate or white spot cleaner? If so, then don't use the medicine anymore, because it has been cured. Change one-third of the water in the tank every day, stop letting dust-proof food in, observe the activity of the fish every morning and evening, and add 2% of Tanzen salt to reduce inflammation.

Judging from the symptoms, it is suffering from white spot disease, also known as Ichthyophthirius punctatus. The symptoms are: white spots on the body or fins, fin congestion, and in severe cases, all over the body, the fins rot into strips, the goldfish is listless, gradually becomes emaciated and dies. The scales on the body turn black because the fish body resists the bacteria itself, and the melanin will slowly fade away. My treatment method: Use the commercially available white spot cleaner and pour it into the fish tank according to the instructions, and slowly heat the water temperature of the fish tank to 27 degrees Celsius (Ichthyophthirius punctatus is sensitive to temperature, and the bacteria begin to die above 25 degrees Celsius), keep it for a week, and it will be cured (it is said that this method is only effective for goldfish that have contracted white spot disease for the first time, I have not verified it). One of my tanks of goldfish has just escaped from the torture of white spot disease, and the tail fin has begun to grow out. You can try this method, I hope it can help you. (I also added some salt to the fish tank in the middle, haha)

White spot disease is an infectious disease in fish, similar to human flu. It is easy to treat, but if you find that you don't treat it, the fish will die in batches. What you call blackening is a side effect of the medication, which is a normal phenomenon. Stop taking the medication and it will get better slowly.

2. What happens when fish get Ichthyophthirius?

After Ichthyophthirius microcarpa invades the skin or gill tissue of fish, it causes tissue hyperplasia and inflammation, produces a large amount of mucus on the body surface, and forms white cysts. The sick fish reacts slowly, swims on the water surface, and dies soon.

3. The fish has (Ichthyophthirius punctatus), also known as white spot disease.

You can refer to the method of ornamental fish and use white spot net. However, if you are a farm, you should have corresponding cheap products. The medicine for ornamental fish is too expensive.

4. What should I do if I have Ichthyophthirius spp. on my tropical fish?

Use physical therapy to raise the water temperature. Do not use drugs. Raise the water temperature to 30 degrees to ensure that the insects die.

5. I have a goldfish that was once infected with Ichthyophthirius. Now it is cured, but it cannot open its mouth. It swims freely and has the desire to eat, but it just won't open its mouth. It chases food, but even if it catches it, it won't open its mouth. What is this disease? How can I cure it?

Jiujiang tapeworm disease is also known as dry mouth disease

Symptoms: The goldfish's mouth cannot close, the body is thin, it floats on the water surface, cannot eat, and its mouth is open, and it is restless. In severe cases, the front end of the goldfish's intestines swells like a stomach, and inflammation occurs, causing intestinal obstruction and death.

Treatment:

①Bathe the sick fish in 3% salt water for 15 minutes.

②Betel nut powder, pumpkin seed powder and bait (ratio: 0.5:1:5)