Towards sustainable aquaculture The evidence presented above shows that total world aquaculture
production currently adds to net global fish supplies, although many types of aquaculture result in a net loss of fish. Aquaculture's potential contribution to fish supplies is severely diminished by rapid growth in production of species fed carnivorous diets and by aquaculture practices that lead to coastal habitat destruction, biological pollution and discharge of untreated effluents. Continued expansion of aquaculture will require healthy coastal and
freshwater ecosystems. Without clear recognition of the industry's dependence on natural ecosystems, it is unlikely that aquaculture will develop to its full potential or will continue to supplement ocean fisheries. We therefore suggest that the aquaculture industry prioritizes the following four chief goals: (1) expansion of the farming of low trophic level fish; (2) reduction of fish meal and fish oil inputs in feed; (3) development of integrated farming
systems; and (4) promotion of environmentally sound aquaculture practices and resource management