* Zooplankton: These tiny animals, like water fleas and copepods, feed on phytoplankton, which are microscopic algae.
* Insects: Many insects, like water striders, dragonfly larvae, and mosquito larvae, feed on algae and aquatic plants.
* Tadpoles: These young frogs are herbivores, consuming algae and plant matter.
* Small fish: Some smaller fish, like minnows, feed primarily on algae and aquatic plants.
These primary consumers play a crucial role in the pond ecosystem by converting the energy stored in plants into a form that can be used by other animals.