Nothing is wrong with them, but you have to cycle your tank first. Most clown's are hearty (spelling*) fish but I would wait about 3-4 weeks before adding any livestock. And as for a anenome I would wait another month after that to make sure all the bio- levels in the tank are at a nominal level. Bio levels are your nitrate, amonia, ph, salinity, and nitrate. Also check for your calcium and Alkalinity levels before adding a anenome. These creatures are very picky when it comes to water quality, except for the bad species like Aiptasia.