First, eating salmon and puffer fish together is life-threatening.
Second, when eating puffer fish, you can only eat the muscles of puffer fish. If the puffer fish dies for a long time, some toxins will also infiltrate into the meat. This way, it is not recommended for everyone to eat. Otherwise, the consequences of poisoning are very serious.
You must choose fresh fish. In late spring and early summer, puffer fish spawn, so don't eat them to avoid poisoning.
Third, fresh puffer fish generally has toxic substances in its head, skin, eyes, blood and internal organs (especially ovaries and liver), which is called tetrodotoxin and belongs to highly toxic category.
It is suggested that it is safer to go to a chef who specializes in puffer fish to cook and eat puffer fish.