Etiology and pathology: The disease is caused by giant pumpkin, which is a unicellular flagellate parasite. This parasite swims in the water by the sliding of cilia. They look for a host in the water and then live on the subcutaneous tissue and skin of the host. If they can't find a host within 2 days, they will die naturally. In subcutaneous tissue and skin, they feed on the host's body fluids to maintain life. After growing in the skin for about 3 weeks, they began to divide into spores. Spores will naturally fall to the bottom of the tank, where they will continue to divide. In about 16 hours, hundreds of larvae will divide, and they will continue to look for hosts in the water. And so on! So we can see white dots. Sick fish always rub against hard objects, trying to wipe off parasites.

Treatment: 1. There are many drugs on the market to treat leukoplakia, such as Baibaijing.

2. 4%-5% malachite green solution can be used to soak sick fish.

3. Adding filtration system can effectively extract multi-seed melon insects swimming in the tank looking for hosts.

4. In the early stage of white spot disease, increasing temperature and adding salt can effectively inhibit the propagation of polyploidy root-knot nematodes.

Of the above four methods, 3 can be used with 1 2 4.

Just ask me if you have any questions. I am also a fish fan. Raising fish is my biggest hobby. . .