The following policy recommendations aim to help the EU aquaculture sector to apply a circular-economy approach in order to participate in the green transition set by the European Green Deal: Define circularity in aquaculture Define a common methodology to measure circularity in aquaculture Increase circularity in aquaculture production by increasing circularity in feed production and by valorising aquaculture wastes (effluent and sludge) Encourage sectorial and cross-sectorial co-governance