I have had the anemone for about 3 months and already it is ready to to go back to the store , it is what is knowna a pac white anemone , heteractis crispa (sebae) there is some conflict to whether or not white is a natural color and from what I have read it can be . He has gotten very big and I havenoticed that the clown loves to lay in hm and feed him so he is fed well , and while this type anemone is not a particullary fast grower it doesnt take much to out grow a 2.5 . He is planted firmly so moving him poses quite th challenge , that could prove to be fatal if a foot is torn . I would say avoid them the need lots of light and a tank that has been up and stable for atleast 6 months (mine has been up since june 04 ) if they die they can nuke the tank and will out grow a 2.5 gallon in a matter of weeks , maybe months and while the symbotic relation ship is cool it is not need to keep a clown . What kind of light do you have on your tank how long has it been up . HOpe this helps