Are daphnia autohetero or mixotrophic

Daphnia, commonly known as water fleas, are primarily considered heterotrophic organisms, as they mainly feed on phytoplankton, bacteria, and organic matter in their aquatic environments. However, some studies suggest that under certain conditions, they may exhibit mixotrophic behavior by incorporating organic carbon from their environment along with performing some photosynthesis when symbiotic algae are present. Overall, their primary mode of nutrition remains heterotrophic.