Puffer fish have evolved the ability to withstand the deadly poison they produce. The fish use the toxin during breeding and to defend against predators. A dose of one to two milligrams of ...

Fugu has between 35,000 and 40,000. The Fugu puffer fish is a delicacy in Japan, but a naturally occurring neurotoxin can make the fish deadly if prepared improperly.

Tokyo - Tokyo is set to relax its strict controls on the sale of the poisonous puffer fish, a dangerous but highly prized delicacy known for making the occasional diner very sick. Under present ...