Because the authors work in the promotion and instruction of aquaculture in developing nations, they have written in simple terms without lengthy technical explanations. Their book fills a gap in the literature in that it covers the management of fish farms in developing nations as well as the biological aspects. After dealing with life history, breeding and rearing of young, they write on water quality management, pond construction, integrated aquaculture with pigs, poultry and agriculture, business-related subjects such as marketing and accounting, and extension and research support for development. The book therefore becomes a compendium of information on all aspects of extensive aquaculture, from the breeding of fish to the operation and management of an aquaculture business in developing countries.