Talk:Porcupinefish
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Article probably should be corrected. Pufferfish has also spines (sometimes?). However porcupinefish's spines are bigger and better developped.
http://en.wikipedia.org/wiki/Pufferfish "The 'pufferfish', also called blowfish, swellfish, globefish, balloonfish are fish making up the family Tetraodontidae, within the order Tetraodontiformes. They are named for their ability to inflate themselves to several times their normal size by swallowing water or air when threatened; the same adaptation is found in the closely related porcupinefish, which have large conspicuous spines (unlike the small, almost sandpaper-like spines of pufferfish)."
http://biomechanics.bio.uci.edu/_html/nh_biomech/pufferfish/puffer.htm "When alarmed, some toads and snakes puff themselves up impressively. Hedgehogs, porcupines, and some Old World salamanders sport protective spines. But only the spiny puffer (Diodon holocanthus) combines inflation and pointy spikes in one spectacular defense mechanism."
