You can check whether the eggs are fertilized and consider changing the water or adding an extra tank. If the eggs in the tank are transparent, it proves that the eggs in the tank are fertilized eggs. If the raised fish will devour the eggs, it is best to prepare a new fish tank, put the roe in a separate fish tank, and change the water of the original fish tank.

Ensure sufficient oxygen supply and external conditions such as light and water temperature, Wait a few days for the eggs to hatch. If the eggs in the tank are cloudy, they are generally unfertilized eggs. Some unfertilized eggs will be sticky, which will make the water surface of the fish tank turbid and reduce the oxygen content, resulting in suffocation of the big fish in the original fish tank, affecting the growth. The water should be changed as soon as possible.