How do rainbow trout alter the ecosystem?

Rainbow trout can significantly impact their ecosystems by influencing the populations of other fish and aquatic organisms through predation and competition for resources. As both predators and prey, they play a crucial role in the food web, affecting the abundance of insects, smaller fish, and even plant life. Their feeding habits can also alter the physical environment, such as substrate composition and nutrient cycling, particularly in freshwater habitats where they are introduced. Additionally, if non-native populations become established, they can disrupt local biodiversity and lead to declines in native species.