The main reason why fish will lie prone to the tank is the unstable water quality, which does not mean that the water quality is not good, but the recent changes are too great, such as changing more water, or cleaning or replacing filter materials, which will lead to fluctuations in water quality. Therefore, when changing water at ordinary times, we must control the amount of water, and at the same time, we should not wash the filter materials easily, which is not good for the health of fish.

In addition to changes in water quality, other changes in water will also cause it to lie prone, such as the introduction of new fish and changes in light flow. These changes may not be harmful to fish, and it will take some time to adapt slowly, but to be on the safe side, try not to change the external environment of the water tank at will.

If the fish is sick, it will also cause it to lie prone. However, this kind of prone cylinder often has other manifestations, so it is easier to distinguish. The appetite during the illness period is not very strong, and you will not grab food after feeding. What needs to be done at this time is to change the water in time, at the same time, raise the water temperature appropriately, and add salt to the water properly, and keep the salinity at about 0.3%.

If the fish is frightened, it will also lie prone, which may also be caused by environmental changes, or abnormal sound and light interfere with it. It should be noted that lying on the tank is the first step of fish's stress response. If you don't pay attention at this time, the situation will worsen, resulting in blindfolding and congestion on its body surface.