An electric eel (Electrophorus electricus) is pictured in this undated handout photo obtained by Reuters December 4, 2014. Electric eels can unleash a potent electrical jolt to wallop their hapless prey. But this zap is not used merely to stun other fish. A new study shows that the eels use it to exert a form of remote control over their victims, causing fish that may be hiding to twitch, thus exposing their location, or inducing involuntary muscle contraction to incapacitate their prey. (Photo by Kenneth Catania/Reuters)
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