Everyone wins
Living with a fish in your tentacles has its good points. Clownfish are very protective of their anemone homes, and chase away other fish, and even divers. Anemones also get food out of the deal—scraps that are dropped by the clownfish—as well as fish poop.
Getting to know you
Before a
clownfish
can call an anemone home, it has to get comfortable. The fish gently touches the anemone's tentacles over a period of several hours or days, until the fish forms a layer of mucus that's resistant to the stings.