Narrator: If there's one thing you know about puffer fish, it's that they can do this. When aggravated by a predator, they, you know, puff up. Some puffers, like the porcupine fish, become a bona ...

Around 30 species have also been discovered living in the freshwater river systems of South America, South Asia and Africa, including the Congo potato puffer, Tetraodon miurus, and the Indian pea ...