Poison found in puffer fish

 Tetrodotoxin is an extremely potent poison (toxin) found mainly in the liver,bladders and sex organs(gonads and ovaries) of puffer fish,globe fish and toadfish among others.

                          To humans,tetrodotoxin is deadly up to 1,200 times more poisonous than cyanide.There is enough toxin in one puffer fish to kill 30 adult humans.