A new UN report says 31.4 percent of worldwide fish stocks were caught at unsustainable levels in 2013.
New rules clear the way for industrial fish farming in the Gulf of Mexico, a move environmental groups say would threaten an ecosystem already under siege.
The farmed fish business is booming, but growing demand puts pressure on wild fisheries as fish farmers need to feed their increasing stock.
A carp fishing industry is springing up along carp-infested U.S. waters and processors are exporting the U.S. problem fish to Chinese diners.
Researchers have found the key to fish-free food for "black salmon," part of a global push for alternatives that could relieve pressure on taxed fisheries.
New certification for fish farms may help consumers make more sustainable choices when buying seafood.