In Hong Kong, where factory space is stacked in skyscrapers, the 15th floor of an industrial block houses vast tanks in which thousands of rare fish swim under the eerie, purple glow of UV lights.
Normally found thousands of miles away on the reefs of the tropics, the coral grouper are being bred on land in one of the world's most densely populated metropolises to feed a local population that consumes 3.6 times the global average in seafood.
Normally found thousands of miles away on the reefs of the tropics, the coral grouper are being bred on land in one of the world's most densely populated metropolises to feed a local population that consumes 3.6 times the global average in seafood.