Researchers at the University of Western Australia built a robot fish in 2018 that they used to scare away one of the world's most invasive species, the mosquitofish.
Key points:Mosquitofish threaten native fish and frogs in Australia, after being introduced about 100 years ago
In a study published on Friday in the journal iScience, researchers revealed how fear altered the behaviour, physiology and fertility of the invasive fish, effectively "scaring it to death". Now there are millions of the tiny fish threatening Australia's native fish as well as frogs, chewing off the tails of freshwater fishes and tadpoles and eating fish and frog eggs.
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