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Animal behaviour

Trust in fish

A mutually beneficial interaction between two species of fish turns out to involve the careful appraisal of one by the other — and the appropriately virtuous behaviour by the former while being watched.

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Figure 1: Client and cleaner.

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Dugatkin, L. Trust in fish. Nature 441, 937–938 (2006). https://doi.org/10.1038/441937a

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