Total aquaculture production of finfish, crustaceans and molluscs amounts to 29 Mt (plus 8Mt of farmed seaweeds). However, the net volume of fish ¯owing to human consumption through aquaculture is at maximum 19 Mt after ocean fisheries capture for fish feeds is subtracted. The appropriation of aquatic productivity for fish feeds reduces supplies of wild fish that could potentially be consumed directly. In southeast Asia, for example, small pelagic fishes, such as
mackerel, anchovy and sardines, provide an important protein source for people. Although some fish used for fishmeal and fish oil, such as menhaden, are distasteful to humans, the demand for small pelagic fish for direct human consumption is likely to increase with population growth in the developing world