Do mullet jump out of the water all the time?



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    Mullet jump out of the water for two main reasons (according to theory):  to avoid predators and as a form of aerial respiration.  By jumping to gain oxygen, mullet can remain underwater in low oxygen concentration areas for up to 5 minutes, something impossible through normal fish respiratory methods.  Sea mullet feed on sediments that are found in these low oxygen areas, so jumping occurs more often during the day when mullet are feeding.  For like reasons, mullet rarely jump at night, when they are not feeding.  Therefore, no, mullet do not jump out of the water all the time, but they do jump out of the water frequently. 

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