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Still Waters

How fish recognise toxic prey

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Predator animals have long been known to avoid devouring brightly coloured and patterned prey, and now an international study has revealed more about how they recognise toxic species.

University of Queensland Visual Ecology Lab member Dr Karen Cheney, of the School of Biological Sciences, said researchers examined sea slugs, or nudibranchs, which had bright colour patterns to warn predators they contained toxic defences.

https://phys.org/news/2017-08-fish-recognise-toxic-prey.html

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Interesting! 

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