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A fish using prick to crack open a stubborn clam shell has been catch on video recording for the first sentence .
The clip , flash in 2009 off the Pacific island of Palau , show an orange - dotted tuskfish ( Choerodon anchoago ) digging a clam out of the ocean floor and transmit the clam in its mouth to a rock . Next , the Pisces the Fishes repeatedly tosses the clam against the rock ‘n’ roll to crush it . [ See the video of the tool - using Pisces ]
An orange-dotted tuskfish picks up a clam to toss it against a rock in this video still.
Since then , the telecasting was study and was just detailed online Sept. 20 , 2011 , in the journal Coral Reefs .
" The fauna excavates sand to get the carapace out , then float for a foresighted time to incur an appropriate area where it can crack the shell , " videographer Giacomo Bernardi , an evolutionary life scientist at the University of California , Santa Cruz , said in a statement . " It requires a lot of forward thought , because there are a number of steps involved . For a fish , it ’s a pretty freehanded deal . "
prick use was once thought to be unique to human being , but lots of animals use tool — and not just primates . Crows , for illustration can figure out how todrop stones into a water - occupy cupto take a tasty float louse within reach . Some character of devilfish pick up coconut shells and use them as asort of Mobile River protection .
The dollar bill - collapse tuskfish is n’t the first Pisces to be observed using puppet . The tuskfish is a form of reef Pisces the Fishes known as wrasse , and these coinage have been seen using rocks as anvil to beat mollusk . But this is the first time the behavior has been catch on video .
" We do n’t spend that much clock time underwater keep an eye on Pisces , " Bernardi said . " It may be that all wrasses do this . It bump really promptly , so it would be well-fixed to drop . "
