This is a soft coral that is hardy and relatively competitive (will push out other corals by its fast growth and allelopathy).
Some people do not like them because they do grow so fast and will take up territory in the tank; mine is banished to one corner to keep it in check. These corals are easy to frag, but is one of the most difficult soft corals to pin down. Because they are soft-bodied, they are not held down by most epoxies and glues; if squeezed between rocks, it will usually either become unhappy or inevitably squeeze out and "crawl around" the tank, usually bleaching and ending up in a corner which has no light. It needs to grow a good base, and then once it does, will grow very fast with even minimal care.