Fish populations refer to the number of fish living in a specific area, such as oceans, rivers, or lakes. These populations can vary greatly depending on factors like habitat, food availability, and environmental conditions. Healthy fish populations are essential for maintaining balanced ecosystems and supporting local economies through fishing. Monitoring fish populations is crucial for sustainable management. Overfishing, pollution, and climate change can negatively impact these populations, leading to declines or even extinction of certain species. Organizations often conduct assessments to track fish numbers and implement regulations to protect vulnerable species and ensure the long-term health of aquatic environments.