1. Gill filariasis: Gill filariasis is caused by nematodes parasitizing the gills of fish. Preventive methods are to keep the water clean, avoid the entry of sewage and pollutants, regularly check the fish body and gills, timely detection and treatment of the disease.
2. Eye Disease: Eye disease is mainly caused by bacterial infections, which may lead to symptoms such as swelling and tearing of the fish's eyeballs. The prevention method is to change the water quality regularly, keep the water clean and hygienic, and avoid contaminating the fish pond with bait and fish medicine.
3. Fish ulcers: Fish ulcers are caused by bacterial infections, which may lead to ulceration, descaling and other symptoms. The prevention method is to keep the water clean, avoid bait, fish medicine and other pollution of the fish pond, pay attention to regular inspection of the fish body and gills, timely detection and treatment of the disease.
4. Water mold disease: Water mold disease is caused by water mold bacteria, which may lead to fish body ulceration, scale removal and other symptoms. The prevention method is to keep the water quality clean, avoid bait, fish medicine and other pollution of the fish pond, pay attention to regular inspection of the fish body and gills, timely detection and treatment of the disease.
In short, to prevent the diseases and pests of Ussuri fish, you need to keep the water clean, avoid the entry of pollutants, and regularly check the fish body and gills to detect and treat the diseases in time. At the same time, some safe and effective fish medicine can be used in the breeding process, and feed management can be strengthened to improve the immunity of the fish body and reduce the attack of pests and diseases.