1. Reason: Zebrafish jumping into the tank may be caused by too much environmental change. Although they have low requirements for the environment, they are sensitive to environmental fluctuations. If the environment fluctuates greatly, it will stimulate them and cause them to jump the cylinder.

2. Solution: The breeder needs to install a heating rod to keep the water temperature constant. Filters should also be installed to slow down the deterioration of water quality. As long as the environment is stable, they can alleviate the cylinder jumping.

1. Reason: Zebrafish jumping into the tank may also be caused by hypoxia. If there is not enough oxygen in the tank, they jump into the tank to get oxygen.

2. Solution: Breeders need to install oxygen pumps to ensure that there is enough oxygen in the water in which they live. You can also change water regularly and use new water to increase oxygen in the water.

1. Reason: Zebrafish jumping into the tank may also be due to the high density of breeding, although they are small in size and do not require high space. However, too high density will also cause them to jump cylinders.

2. Solution: Breeders need to reduce the density of fish tanks, or replace larger fish tanks to ensure that they have enough living space.

1. Reason: Zebrafish jumping into the cylinder may also be caused by being frightened. They are less daring. If there is too much noise around them, they will jump into the cylinder.

2. Solution: Breeders need to keep their surroundings quiet and wait for zebrafish to recover. If they jump into the cylinder seriously, they need to add a cover to prevent them from really jumping out and getting hurt.