Do Fish Sleep? Brief from National Oceanic and Atmospheric Administration

By SleepSchool Editorial Staff

The nature of fish “sleep” is an area of active research. While fish do not sleep in the same way that land mammals sleep, most fish do rest.

Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest. These periods of “suspended animation” may perform the same restorative functions as sleep does in people.


Tags:  Fish National Oceanic and Atmospheric Administration





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