Tetrodotoxin - Sodium Channel blocker - Extremely toxic causes paresthesias, dysrhythmias and paralysis - Found in the sushi called Fugu (From the Pufferfish) - Eating the sushi is considered a delicacy and goal is to get just enough of the toxin to get perioral paresthesias after eating. - Also found in the blue-ringed octopus, angelfish and parrot fish. Enjoy your seafood and take a look at the attached pic of actual fugu.
