Angel's are territorial. One common method used is to rearrange the whole tank so it looks totally different, then introduce both angels back in there again. They will still be aggressive, but not as aggressive as before, since they will soon establish their own territories.
I'm not sure if having tiger barbs in with angels. If I remember correctly, tiger barbs are fin nippers and will tear up the angels fins.
I'm not sure if having tiger barbs in with angels. If I remember correctly, tiger barbs are fin nippers and will tear up the angels fins.