What are river otters positive effects?

River otters play a crucial role in aquatic ecosystems by maintaining healthy fish populations and promoting biodiversity. As top predators, they help control the populations of various prey species, which can prevent overpopulation and the associated negative impacts on habitats. Additionally, their presence can indicate a healthy environment, as they require clean water and abundant food sources to thrive. Their playful behavior also contributes to the ecological balance by fostering interactions among species.