Aquaculture is a growing source of healthy protein for millions of people around the world, but there are big differences between farming fish on land and at sea.
Farmed fish like these carp now make an important contribution to global food security.
Ben Belton
Many critics say that fish farms mainly sell their output to wealthy countries and don't provide much benefit to poor people in producing countries. Three aquaculture experts show why this view is wrong.
Almost all production of freshwater fish includes Tilapia.
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Recently revised guidelines on mercury in seafood suggest cutting bait on some fish but making sure you eat other types. Then there are omega-3s to consider. Here are some tips to help you choose.
Tanzania has around 30 species of tilapia, 11 of which are found nowhere else on earth.
Reuters/Antony Njuguna