If you have ever seen the movie Finding Nemo, then you have heard of a ritteri anemone. It is a Heteractis Magnifica and it resembles a plant. It lives in shallow waters in the Pacific Ocean and houses small fish. It can grow up to three feet wide and lives on fish and crustaceans.Common clownfish, pink skunk clownfish and black finned anemone fish are just a few of the different types of fish associated with the ritteri anemone. These fish use the anemone as a host and it can act aggressively to any other types of fish that come on contact. Its colors are known to change to an array of different tones and it tentacles can retract or reach out depending on the mood of this unusual animal.