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.

Necessary measures should be taken after the white-sided swallowtail spawns For anti-inflammatory and disinfection measures, methylene blue, potassium permanganate or salt can be used for disinfection to prevent the deterioration of goldfish wound infection.