Zebrafish point to an ancient origin of sleep

As one of those people who REALLY love to sleep -and doesn’t get close to enough of it- I am always interested to read on the topic. What I didn’t expect was to read about sleeping fish and how that relates to its origin.

Read more on Mappingignorance.org

Zebrafish – Danio rerio. Photo by Azul. Whether he was sleeping when the picture was taken I cannot say…

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