Groups of blind Mexican fish that communicate using clicks appear to be developing cave-specific accents. Plus, the impact of COP26 pledges, and how machine learning is helping mathematicians.
. Researchers studying the Mexican tetra analysed hours of fish chatter in six caves spread across the three mountain ranges.
They noticed significant differences: clicks were relatively high-pitched in one cave, and deep and booming in another, for example. The linguistic split could eventually contribute to ongoing speciation among the fish. “Maybe after a million years it will have drifted so much that they will not be able to understand each other anymore,” says neuroscientist Sylvie Rétaux.
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