clown fish aggression over anenome

[Dash]

Give them some time. Mine were similar - larger one hogged the anemone and the smaller guy hung around, at first banished quite far away but gradually allowed closer and closer until finally both are together.

[DKoKoMan]

They will usually sort it out in their own. If it is going sideways, it usually will happen pretty fast with no intervention and removal of one of the clowns.