Fish waste in Portugal represents a significant challenge, with around 35% of fish consumed being lost along the value chain.

This waste occurs mainly during fishing, processing, and consumption, compromising the sustainability of the sector and resulting in the loss of valuable nutrients. Although Portugal is one of the largest consumers of fish per capita, the lack of up-to-date data on waste makes it difficult to manage this problem effectively.

The fish value chain involves several stages, from capture to consumption, with most waste occurring at the consumer level. Although the processing industry has evolved, using co-products such as fishmeal and fish oil, the economic valorization of these by-products still faces challenges, such as high logistics costs and technological limitations.

To reduce food waste, an integrated approach is needed, involving improvements in handling, storage, and, above all, changes in consumer behavior. The implementation of more effective legislation and technological innovations are essential to optimize the use of marine resources. In addition, the strategy of valorizing co-products offers a valuable opportunity for the sector, generating both environmental and economic benefits, while contributing to the reduction of waste in the fishing sector in Portugal.

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