6th June 2016 by What's What Team
Fish that turn into sleeping bags
The parrotfish are found in shallow coastal waters in the seas. Some parrotfish species cover themselves in a gelatinous substance especially at night before they sleep. This substance is produced by the fish from mucus from the glands located at the upper edge of the gill cavity. They form this protective sheath so that other fish of prey cannot smell them out at night.
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