Your article perpetuates a common error regarding pond
aquaculture when it states, “These systems all rely on large volumes of clean water flowing to
the fish and carrying waste away.” In the catfish industry (the largest pond-culture venture in
the United States), ponds are only emptied for renovation once every 10 to 20 years, and fresh
water is added only to make up evaporation losses.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.