PIRANHA PICTURES: Yard-long "Megapiranha" Fossil Found

PIRANHA PICTURES: Yard-long
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Despite their fearsome reputation, modern piranhas are usually no longer than a foot (30 centimeters) and only occasionally bite humans. More often, they annoy fishers by attacking the anglers' catches--even if the catch is another piranha.

As for Megapiranha, no one is sure what it ate, but scientists suspect it had a diverse diet.

"It's probably not something we can reconstruct at this point," biologist Wasila Dahdul said.
—Photograph by Paul Zahl
 
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