Pacific and Indian Oceans
Stonefish is the most poisonous fish discovered. Just touching this "monster" can cause lethal damage to humans. The stonefish have extremely poisonous spikes in their fins. Their venom causes severe pain with possible shock, paralysis, and tissue death. People who have survived the attack of this fish continue to recover for months. However, this danger doesn’t stop tourists from ordering this delicacy.
Its so common we have whole industries based on that.
Cassava Floor, fried, boiled and even given raw to animals.