Clownfish, Amphiprion ocellaris, in anemone by Rafi Amar. Clownfish generally live in pairs in association with an anemone. This is a classic example of symbiosis - where two different organisms live in close association to the advantage of both. The tentacles of the anemone protect the clownfish from predators. The fish may increase oxygen available to the anemone by disturbing the tentacles. The anemone might also feed on the fish's waste products.