Fish and aquaculture contributed about 15.3% of the global animal-source protein for human consumption in 2018, with finfish being the primary source. Although aquaculture now produces a greater weight of aquatic animals, the protein contribution from capture fisheries was slightly higher due to differences in meat yields and protein concentrations. The study emphasizes the need for increased aquaculture production to meet growing protein demands but also highlights the environmental and food security challenges associated with using wild fish for feed.

The authors declare no conflict of interest, but the research was supported by a grant from the Gordon and Betty Moore Foundation to the World Wildlife Fund. While this doesn't necessarily indicate bias, it's worth noting that WWF has a strong interest in promoting sustainable seafood practices.

This study provides a useful overview of the contribution of fisheries and aquaculture to the global protein supply, but several methodological limitations, particularly the reliance on potentially inaccurate data and simplified protein comparisons, prevent a higher rating. The discussion of implications and future directions could also be more robust.