Over the past decade, there has been growing concern among international stakeholders, particularly in Mediterranean countries, about aquaculture product quality, knowledge management, interaction with the environment, technology and systems, fish health and welfare, management of biological lifecycles and sustainable feed production within the aquaculture sector. This publication is a result of a constructive debate among stakeholders. It focuses on codes of conduct and better aquaculture practices, bases for certification schemes, types of certification schemes, and the ways to certify sustainability.