The primary driver of changes in global fish populations is overfishing, exacerbated by unsustainable fishing practices and habitat loss. As demand for seafood increases, fish stocks face intense pressure, leading to population declines and potential collapse of species. Additionally, climate change and pollution impact fish habitats, further complicating recovery efforts. Effective management strategies, such as setting catch limits and protecting critical habitats, are essential in mitigating these pressures and promoting the sustainability of global fish populations.