1. Water temperature problem: The herring does not open its mouth may be because their appetite is affected, and water temperature is one of the important factors affecting the appetite of the herring. When the water temperature is very low, the appetite of herring will be reduced, and they may not open their mouths at this time.
2. Food problem: The herring may not open its mouth because the herring is not interested in this kind of food. Although herring can eat a lot of food, they do not like to eat all food. If the food is not suitable for the taste of herring, herring is not easy to open.
3, sick: do not open the mouth may also be because the herring is sick, at this time their state is not good, will also affect the appetite, resulting in not open the mouth.
1, pays attention to the water temperature: If the artificial breeding black carp does not open the mouth, may adjust the water temperature suitably, adjusts above 20 degrees, at this time the black carp's appetite will be quite good, easier to open the mouth. If they do not open their mouths when fishing for black carp, they can choose to fish in good weather and high temperature, when the appetite of black carp is more vigorous.
2. Choose the food that the herrings are interested in: Whether you are feeding the herrings or fishing for them, you have to use the food that they are most interested in. Animal feed is rich in nutrition, and their taste is very attractive to herring, so you can choose animal feed to feed herring. Specifically, there are many kinds, such as snails, shrimps, earthworms and so on.
3. Treat the disease in time: If the herrings in the fish pond are sick and do not open their mouths, you must first determine the type of disease and then treat it in time. In the process of breeding, it is better to disinfect regularly to avoid bacterial reproduction leading to fish illness. In addition, we should pay attention to the water quality and not be too dirty.
