1. Insufficient dissolved oxygen in the water: If the silver carp does not open its mouth in the sultry summer or other times when the air pressure is too low, then the silver carp does not open its mouth because the dissolved oxygen in the water is too low. In this case, the appetite of silver carp will be very low, they are not easy to open.
2. The water temperature is not suitable: the water temperature also has a great influence on the appetite of silver carp. In the case of very low water temperature, silver carp will not like to eat, it is not easy to open.
3. Sick: Silver carp is easy to get sick in some cases, such as when the water quality is not suitable. If a silver carp is sick, they will not speak because they are not feeling well. In this case, in addition to the symptom of not speaking, there will be other related symptoms, which can be observed.
1. Increase the dissolved oxygen in the water: If the dissolved oxygen in the fish pond is relatively low, then some oxygen can be artificially supplemented during the breeding process. If the dissolved oxygen in the water is too low to open the mouth of silver carp when fishing, it is necessary to know the weather state before fishing and choose to go fishing when the air pressure is relatively high.
2. Adjust the water temperature: When culturing silver carp, it is necessary to pay attention to the water temperature. The water temperature should not be too low, and should be kept at about 20 degrees as far as possible. If the water temperature is too low, it can be adjusted artificially, so as to ensure that silver carp have a strong appetite, it is easy to open. When fishing for silver carp, it is also necessary to fish when the water temperature is relatively high, at which time silver carp are more likely to open their mouths.
3. Treatment: If the silver carp does not open its mouth because of illness, then observe whether the silver carp has other symptoms. After determining the specific disease types of silver carp, treatment is carried out.
