do yourself a favor and just DONT get an anemone at all. Sure they are pretty etc. but you are new and the tank is small. Its not a matter of if it will die but when. I am not questioning your abilities, simply the setup. You could lose your whole stock. If you must get one ONLY consider the bubble tip and wait quite a long time. Go for a frogspawn or torch coral, they look similar. Ive had clowns host them too. You dont want to lose your whole stock. 55 gallons with live rock is not much space so I would recommend clownfish, gobies, small wrasses etc... more nano types of fish. Avoid any damsels. they get territorial and will destroy any fish you will try to add.