problem with clownfish pair

Hi guys i have two clownfish and a yellow tang. My clownfish got along when i first got them they got along. but now my orange nemo oceallious clown is attacking my black clown fish. what do i do . he does even let the black clownfish eat or swim around

 

You can try a few things.

1. Move some of the scape around.
2. Move the offending clownfish to either a breeder basket or the sump for a day or two.

If the clownfish is still eating, does not have tattered fins and is not breathing at the surface I would be tempted to let them work it out. With that said, for some reason a female will reject the smaller male and no intervention can change that. He may not be displaying enough submission or she may sense he is not ideal to spawn with.

Good luck.