A river ecosystem is a dynamic environment where water flows continuously, supporting a variety of plants and animals. It includes the river itself, its banks, and surrounding areas, creating habitats for species like fish, birds, and insects. The water in rivers is essential for these organisms, providing nutrients and a means of transportation. In a river ecosystem, different zones exist, such as the riparian zone along the banks and the benthic zone at the riverbed. These zones host diverse life forms, from algae and aquatic plants to larger animals like otters and herons. The health of a river ecosystem is crucial for maintaining biodiversity and supporting local communities.