Fish cooperate, cheat and punish across species boundaries

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descent

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Long article, brilliant research. Seems to assert that the average New York cab driver, if transformed into a fish and dropped onto a reef, would have a hard time chiseling the expert game theorists who live there.

As usual, the motive force that drags a project toward the sunny uplands of scientific enlightenment across deserts of scorching ignorance is a team of grad students yoked together like oxen.

~~~

Animal behaviour: Inside the cunning, caring and greedy minds of fish

Nature.com - 26 May 2015

... And he discovered even more bizarre facts about the social lives of fish. In one experiment, he showed that when cleaners work in male and female pairs, as frequently happens in the wild, they are much less likely to cheat than when they work alone[6]; and that this is mostly because the female gets punished by being chased around by the male if she slacks off[7].

Perhaps the laboratory's most imaginative experiment involved the construction of an entire fake coral reef, complete with dummy eels. The job fell to doctoral student Alex Vail, who glued together bits of coral rubble and put them in a hot-tub-sized tank. Vail then made models of moray eels ... (read more)
 

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