Fish ecology is the scientific study of the relationships between fish and their environments. This field of research focuses on understanding the behavior, distribution, population dynamics, and interactions of different species of fish in aquatic ecosystems. Researchers in fish ecology study how fish species interact with one another, their habitats, food sources, predators, and other environmental factors to better understand the overall health and functioning of aquatic ecosystems. This research area is important for conservation efforts, fisheries management, and understanding the impacts of human activities on aquatic ecosystems.