No one knows why mullet jump! Mullet may jump more frequently in waters with low dissolved oxygen, which could indicate a need for oxygen. Some biologist think jumping helps the fish remove parasites while others think it is a part of schooling behavior. But who knows - maybe they just like jumping. For more information on mullet, check out the Florida Fish and Wildlife Conservation Commission's website.
Photo from http://dailypicksandflicks.com.
I heard on an Estuary ecotour that it is to clean out their gills.
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