Nature reports
Publisher: University of Bristol
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![Loïc Tremblay; GFDL Blue acara, Andinoacara pulcher](https://cdn-img.newstory.nl/naturetoday/images/optimized/dfb89978-6f1e-4626-80d6-f6200d3ca17b.jpg&h=170&w=270&v=1512070698)
Researchers from the University of Bristol have discovered that some fish within a shoal take on the responsibilities of leader when they are under threat from predators...
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23 May 2017 7 jaar oud