Clownfish do not need an anenome to survive, they are very happy with out one in most cases.. They probably will never interact. If your clownfish are captive bred, they won't klnow what an anenome is, there fore, not need to take refuge in one. They must be wild caught together, to truely host the anenome. I don't think they will ever host the anenome, and, it would be in the anenomes best if it was returened to the pet store. I'm very against keeping anenomes in aquarium, in many cases they have been pulled out of the ocean, just to be placed in a glass box, and die a very very short life. The average anenome in the ocean, can live to be over 200 years old, in the home aquarium, most do not survive there first year. We just do not have the ability to keep the water, as precisionally clean as they need...