Puffer Fish

Puffer fish are another contender for the title of “most poisonous” fish in the world because of their propensity to ball up in order to fend off predators. That is only applicable when their poison is ineffective, though. Tetrodotoxin, a form of venom that almost all pufferfish species carry, is 1,200 times more potent than cyanide and can be lethal in a matter of hours. Additionally, because there is no known cure, they pose a particular risk to swimmers in isolated places.

Despite being deadly, the Japanese have come to regard the fugu species of puffer fish as a delicacy. Only trained, licensed chefs are allowed to prepare its meat, at least the edible half, making it one of the priciest foods available nationwide. Despite the fact that eating fugu is still thought to cause the death of one person annually in Japan, according to some estimates.

Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Tetraodontiformes
Suborder: Tetraodontoidei
Family: Tetraodontidae