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Submission + - Some Fish Use Electricity for Communication ( 1

AstroPhilosopher writes: Most people know that some eels are able to produce an electrical charge powerful enough to stun their prey; big deal. Now some researchers from John Hopkins University have discovered that some knifefish are also able to produce electricity, albeit more weakly than electric eels. However, the knifefish uses its electrical capabilities in another manner. Researchers have discovered that not only do knifefish use their electrical powers to sense the environment around them, but they also use electricity to communicate.
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Some Fish Use Electricity for Communication

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"Survey says..." -- Richard Dawson, weenie, on "Family Feud"