Expectant Swordtail?

[ADMWNDSR83]

I have noticed today that one of my female swordtails is getting noticeably chubby.  My male is following her closely and "nosing" her in her pelvic/anal fin area.  Is this breeding behavior, or are we past that point and she is preparing to release?  I know swords are livebearers, so I'm just trying to be sure I know what stage in the game we are at.  Thanks for any insight!

[Sykes]

I'm breeding Pineapple Swordtails currently and from both what I've read and observed, if a female has been in contact with a male and is of breeding age, she's almost always expecting. I'm sure there are pros out there that could tell easily, but I always have a hard time knowing exactly when she's about to pop. My approach has been to provide tons of plant cover (preferably live plants but some fake options work well in a pinch) and just let them be. Next thing you know you'll start finding fry swimming among the plants.