<a href="https://en.wikipedia.org/wiki/Aquaculture" class="extiw" title="w:Aquaculture">Aquaculture</a> - workers harvest catfish from the Delta Pride Catfish farms in Mississippi.
Ken Hammond
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USDA OnLine Photography Center - <a rel="nofollow" class="external free" href="https://www.usda.gov/oc/photo/96cs0257.htm">http://www.usda.gov/oc/photo/96cs0257.htm</a>