Is there any hope for peace? (Dottyback)

[Menidia]

So my FOWLR has been running for over 3 months. 2 months ago I added a small ocellaris clownfish.

 

I decided to add a Springeri dottyback (probably should have seen aggression coming). I figured since the clown had been established they would be fine.. However 15 minutes after acclimation and the dottyback is going at the clown, charging at it and everything. The clown is terrified.

 

I managed to trap the dottyback and move it to a plastic livebearer box. I really like the dottyback, in fact it is one of the species I always wanted, but the clown comes first.

 

Is there any hope for peace in a 20 gallon?

 

If not, are stores likely to trade or take the dottyback?

[RC1313]

I doubt there will be peace..an LFS should take it back

[Menidia]

Found a new home for it. Thanks!