If it is an oviparous fish, after the eggs hatch, the fish will swim in the water and sink to the bottom, indicating that it is dead. But the egg viviparous fish is different, after birth sinks the bottom is the normal, generally must wait for one day later, may the normal swimming. Usually the fish in the first day after hatching, do not need to feed each other, it can absorb their own yolk, after a day to feed.
1. Water temperature change: The most likely reason for fish sinking to the bottom is that the water temperature has changed. Usually, when the temperature drops, the fish will lose their vitality, do not eat, and have no energy. In this case, it is very easy to sink to the bottom and lie in the tank. If you want to treat it, you just need to raise the water temperature appropriately, but not too high.
2. Environmental changes: When the water environment changes, the fish will also sink to the bottom. There are two main manifestations of this situation. One is when new fish enter the tank, and the other is when the water quality fluctuates. The former needs rest and will recover slowly. The latter should pay attention to the change of water quality to avoid the same situation happening again.
3. The fish is sick: When the fish is sick, it will sink to the bottom. At this time, you should pay attention to the appearance of the fish, see what disease it has, and change the water to warm it up in time, so that it can be treated in time.
