Fish play a vital role in aquatic ecosystems as they contribute to nutrient cycling, food web dynamics, and ecosystem health. They serve as prey for higher trophic levels, such as birds and larger fish, while also acting as predators that help control populations of smaller organisms, maintaining a balanced ecosystem. Fish contribute to the biodiversity of aquatic systems and have important roles in habitat structure, as some species help in the aeration of sediments and the redistribution of nutrients. Moreover, fish are significant for human economies and livelihoods through fishing and aquaculture.