Pufferfish are found near Japan, China, The Philippines, and Mexico. It contains tetrodoxin- a toxin that causes nausea, a burning in the mouth/throat, headaches, speech and coordination problems, convulsions, paralysis, cardiac arrhythmia, and ultimately death. Select natural predators are immune to their toxins.
Also known as blowfish, some of the 120 species have spines to make them even more inedible to predators. They are up to 3 feet or one meter long, and the tetrodoxin contained is 1,200 times deadlier than cyanide for humans, with enough toxin to kill 30 adults in each fish. There is no known antidote.
Pufferfish range in size, depending on species: one inch to a few feet in length. They do not have scales, and their teeth are fused into a sharp beak. Some are brightly colored, others a brownish color.
My sources were National Geographic and the Conservation Institute.
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