What are the worms in pond water?

Worms in pond water typically include species such as freshwater planarians, tubifex worms, and various types of oligochaetes, like earthworms adapted to aquatic environments. These worms play essential roles in the ecosystem by breaking down organic matter, contributing to nutrient cycling, and serving as food for various aquatic organisms. They can be indicators of water quality, as their presence often reflects the health of the pond ecosystem. Overall, these worms are crucial for maintaining the balance and functionality of aquatic habitats.