There are several anemones that can host clownfish, but the most popular in the reef-aquarium hobby is the bubble-tip anemone. Bubble-tip anemones are, perhaps, the most desirable anemones to host clownfish. They are more colorful than most long-tentacle anemones and less predatory than carpet anemones.
Stichodactyla mertensii, commonly known as Mertens' carpet sea anemone, is a species of sea anemones in the family Stichodactylidae. It is regarded as the largest sea anemone with a diameter of over 1 m (3.3 ft), the next largest being Heteractis magnifica which has longer tentacles.