Science
Wild cavefish can somehow survive with almost no sleep at all
![](https://kansasdigitalnews.com/wp-content/uploads/2024/11/SEI_229684416-780x470.jpg)
Several populations of Mexican tetra fish that live in darkness have independently evolved to need hardly any sleep, but the reason why is a mystery
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Several populations of Mexican tetra fish that live in darkness have independently evolved to need hardly any sleep, but the reason why is a mystery
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