lol ok. Seen the fin, never seen it in use though![]()
Sometime after the chasing and fin shimmying their is a brief point in time where the male will swim beside or under the female and transfer sperm to her body via the elongated anal fin and it happens fast so most of the time you don't actually see the mating.
Also most livebearers can store sperm for several months even if no males are present so you can actually bring them home already pregnant..