Abstract
Freshwater aquaculture production in 2011 was 44.3 million tons or 29% of world fisheries production. Roughly 95% of this production was from Asia – China was the leading country. Ponds are the common culture system, but raceways, cages, net pens, and water re-use systems are important. Seed stock for grow-out is produced in hatcheries from farm-reared brood stock. Fertilizers, feeds and mechanical aeration increase production in ponds. Competition with agriculture for land and water, wetland destruction, water pollution, and lack of fish meal and oil for use in feeds could limit aquaculture. There is an effort to avoid these impacts