If that's the case then the sunrise dotty is most likely dead or has jammed itself in the LR
. If it's still in there alive I would definately remove it and return the fish to the LFS
. If there was any chance for two dotties to get along, that would have been the combination but your set up may be too small and/or the LR
was not as abundant as you thought.
Why did you not remove the fish as soon as you saw such extreme aggression?