Coral reef fisheries feed tropical coastal communities across the world, yet they catch many species at once, often in places with little monitoring, which makes their health notoriously hard to assess. A study in the Proceedings of the National Academy of Sciences, led by KAUST interdisciplinary marine scientist Jessica Zamborain-Mason, flips the usual framing: instead of tallying losses, it asks what could be gained by rebuilding stocks.
Drawing on large fisheries-independent datasets covering 1,211 individual reef sites across 23 jurisdictions operating below their maximum production, the team estimates that rebuilding could yield from roughly 20,000 to 162 million additional sustainable servings of reef fish per year depending on the jurisdiction. In Indonesia alone, the gains could support recommended fish intake for about 1.4 million additional people annually.
The catch is patience: many reefs would need to roughly double their current fish biomass, with recovery times ranging from about six years to nearly fifty depending on how much fishing continues during the rebuild. The authors call for investment in monitoring, management and enforcement, and for reef fisheries to be written into national food-security planning, arguing that well-managed reefs deliver nutrition, resilience and economic returns together.