You should prolly separate the other fish from the pair. My FH's just bred and they had similar behavior like your pair before they spawned. Like Mbuna said, keep a look out for the female's tube.
Yeah right now I just notice my other fh just mated!!!!!! I woke up and saw eggs on the floor and I was like WTH?!? SOOO imma put them 2 in a basket and see what happens... SUCH GREAT FISH!!!
