Whereas wild capture essentially has stagnated at around 90 million tons since late 1980s, aquaculture has been expanding steadily during the same period. 2010 saw an 8.7% increase and 2011 6.2% to nearly 64 million tons.
Aquaculture currently provides over 40% of the fish consumed globally and is expected to top 60 percent by 2020.
Growth in fish farming can be a double-edged sword, however. Despite its potential to affordably feed an ever-growing global population, it can also contribute to problems of habitat destruction, waste disposal, invasions of exotic species and pathogens, and depletion of wild fish stock.