This authoritative text on ecological aquaculture, aquaculture ecosystems, and sustainable aquaculture is in three parts. The first defines how ecological principles are applied to aquaculture, discusses aquaculture as an integral part of aquatic resources management and includes an extensive review by Malcolm Beveridge showing how traditional methods can be developed for ecological aquaculture. The second part covers ecological methods for sustainable hatchery, feeds, water quality, and market approaches to aquaculture. The third part of the book gives the context of ecological aquaculture, reviewing important species that feed low on the aquatic food web or on-farm resources, village-level aquaculture ecosystems, sustainable coastal aquaculture, resevoir ecosystems, and the principles of integrating aquaculture ecosystems into "bioshelters". The book ends with an action plan to develop environmentally sound aquaculture for global food security.