What is one of the ecological impacts of leeches on fish populations?

The choice that indicates leeches serve as a food source highlights an important ecological role within aquatic ecosystems. Leeches are part of the food web and can provide nutrition for various fish species and other aquatic organisms. By acting as prey, they contribute to the overall energy flow within the ecosystem, allowing for a more balanced food web, which ultimately supports healthy fish populations. This relationship illustrates how leeches can have beneficial interactions with fish, playing a role in their growth and survival, particularly for smaller fish or fry.

In contrast, while leeches can compete with fish for resources or even consume fish eggs in some contexts, the choice that emphasizes their role as a food source underscores the interconnected nature of aquatic life, promoting biodiversity and ecosystem dynamics.