The levelling off of the global fisheries catch reflects a growing decline in most major fishing areas. Today, these fishing areas are producing lower yields than in the past, and it is unlikely that substantial increases will ever again be possible (FAO, 2000).
Inland and marine aquaculture production grew by about 5% annually during the 1950s and 1960s, by about 8% per year during the 1970s and 1980s, and by some 10% per year during the 1990s (FAO, 2000). Most aquaculture is developed in freshwater environments, primarily in Asia. The development of inland aquaculture is seen as an important source of food security in Asia, particularly in land-locked countries.