Are the quills on a blowfish poisonous?

Blowfish quills are not poisonous. The poison in blowfish, called tetrodotoxin, is located in their internal organs, especially the liver, ovaries, and intestines. The quills are simply sharp spines that they use for defense.

While the quills themselves aren't poisonous, they can still cause injury if you get poked by them. They are quite sharp and can penetrate skin.

The real danger with blowfish lies in their internal organs, which contain the deadly tetrodotoxin.

It's important to never eat a blowfish unless it has been properly prepared by a trained professional.