The manual has been divided in two volumes, with this first one divided in three parts. The first part deals with the historical background and a discussion of the main factors that affect fish seed production. The second has been devoted to the life history and biology of the species. This includes also a short section on microalgae, rotifers and brine shrimp. The third section deals with hatchery production procedures, from broodstock management to production of live feed, egg management, larval rearing weaning, fry transport, and diseases.