Who mentioned anemone? An anemone isn't a requirement for any type of clown. And why is the recommendation always return it? It shound to me as if someone is parroting information instead of providing advice on the basis of knowledge and experience. The simple fact is this is a hobby of expereience and there is no better way to learn than reading and asking questions combined with firsthand experience. Of course no one should learn at the expense of the health of an animal but then again I am sure that's why the questions are asked in the first place.
Look at the fish closely. Are there any physical signs fo
stress or injury? raised white spots? anything? Are there other tankmates? Any signs on them? Read the article about quarantining in the above article section and be preapred in case yout livestock needs to be treated. With proper feeding, care, and the learning experience I am sure you will eventually have a healthy happy tank.
Watch, learn, and read and I am confident that he will be fine. Patience is a golden virture even moreso in this hobby. That includes patience for those newer to the hobby who need help.