The lunar cycle may synchronize with feeding activity, luring large muskies to take angler bait.
This is according to results published May 28, 2014, in the open access journal PLOS ONE by Mark Vinson from U.S. Geological Survey and Ted Angradi from U.S. Environmental Protection Agency.
Previous studies have suggested a relationship between the moon and fish behavior. To investigate this further, scientists analyzed angler catch records for evidence of an effect due to the lunar cycle and explored sources of its variation on fishermen's catch. They analyzed angling catch records for ~ 350,000 muskellunge (largest member of the pike family) from North America to test for a cyclic lunar influence on angler catch.
Mark Vinson added, "Our findings give statistical support to what many anglers have believed for a long time, that the moon matters - we are not sure exactly why, but it matters. Muskellunge are notoriously difficult to catch, so anglers will appreciate any edge they can get."