[ExI] a little fun

[William Flynn Wallace]

A sad day ahead for blind fish - from Nature:

In the underground caves of north-eastern Mexico, groups of blind fish that
communicate using clicks seem to be developing cave-specific accents
<https://nature.us17.list-manage.com/track/click?u=2c6057c528fdc6f73fa196d9d&id=b7517de195&e=d520e39c16>.
Researchers studying the Mexican tetra (*Astyanax mexicanus*) 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.  (is this a cool way to make a living, or what?)    bill w
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