This indicator evaluates the conservation status of fish species as classified by the International Union for Conservation of Nature (IUCN). It encompasses a range of categories, including endangered, vulnerable, rare, and data-deficient species, highlighting not only those at immediate risk but also those whose populations are not well understood. By tracking these classifications, we gain insight into the rising pressures facing aquatic ecosystems due to factors such as overfishing, habitat loss, and climate change. Understanding the status of these species is crucial for prioritizing conservation efforts and informing policies aimed at preserving biodiversity. Additionally, this indicator serves as a barometer for the overall health of marine and freshwater environments, underscoring the intricate connections between ecological balance and species survival. Source: