One major biotic factor that affects the health of coral reefs isare?

One major biotic factor that affects the health of coral reefs is the presence and abundance of herbivorous fish, such as parrotfish and surgeonfish. These species play a crucial role in controlling algal growth on reefs, preventing algae from outcompeting coral for space and resources. Additionally, the interactions between corals and symbiotic zooxanthellae, the photosynthetic algae living within coral tissues, are vital for coral health and resilience. A decline in these key species can lead to imbalances that harm the overall ecosystem.