1. Reason: Guppies always float on the water, which may be due to lack of oxygen. Although their demand for oxygen is not high, the amount of dissolved oxygen in water is too small, and they will also suffer from hypoxia. When the water surface lacks oxygen, they will try to breathe the air on the water surface.

2. Solution: The breeder needs to turn on the oxygen pump immediately to ensure sufficient dissolved oxygen in the water. If there is no oxygen pump, you can increase the oxygen in the water by changing the water.

1. Reason: Guppies always float on the water surface. It is also possible that the living water quality is too poor. Although they have strong adaptability to the environment, the poor water quality will also cause them to float on the water surface.

2. Solution: Breeders need to change their water immediately to keep the water clean. If a filter is installed, the power of the filter can be adjusted to the maximum, which can also clean the water quality.

1. Reason: Guppies always float on the water and may be caused by being frightened. They are less daring. If they are frightened, they are prone to jump. When they jump into the tank, they will always float on the water.

2. Solution: Breeders need to keep their surroundings quiet until they recover on their own. If they jump into the tank, a cover needs to be built above the fish tank, so as to prevent them from being injured when jumping into the tank.