Sea Anemone and Clownfish. Contrary to popular belief that clownfish live in any anemone, only 10 percent of anemone species form a symbiotic relationship with the fish, uh-NEM-uh-nee) often mistaken for plants are actually predatory animals closely related to Coral and jellyfish. Anemones are polyps that attach themselves to rocks on the sea bottom or on coral reefs.