The reasons why guppies shake their heads and tails:

1. They are not adapted to the water temperature. The changed water temperature is not suitable for guppies to live in. The water temperature should be stable at 28°C to keep guppies in a comfortable environment.

2. The water quality is too poor. Long-term breeding will lead to poor water quality, and it is necessary to replace it with new water in time.

3. Overfeeding. If you can feed the guppy at a fixed time, at a fixed point, and in a quantitative manner every day, the guppy will take the initiative to swim in front of you and beg for food when it is hungry. In this way, you can gradually reach a tacit understanding with the guppy, and you will not feed too much or too little.

4. Cold. The temperature difference is large when changing water, greater than 3 degrees. Causes guppies to catch colds.

Guppies shake their heads and tailsSolutions:

1. When changing the environment, ensure that the water temperature is suitable for guppies to live.

2. Change the water for guppies regularly to ensure a clean environment.

3. When feeding guppies, the supply should be appropriate.

4. Use special medicine to treat guppies when they are sick.