clown fish hosting anemones are not all the same. They are all difficult to keep happy. Some species are much more difficult to keep than other and they all requires different condition.
If you don't know much about anemones, you need to research about them. Often to keep anemone successfully, you need to set up a tank for them and add other animal that tolerate the condition of that tank. If you already have a reef tank, give us information about the tank and we can recommend species that may do well in that tank. All of the anemones need stability of the aquarium, plus the right condition to do well. If you don't provide what it need, it will go marching in your tank and wander into pump intake, overflow and kill itself. Before killing itself, it will kill any corals on in it's way.