I will be so disappointed if I do not have at least a female. I am hoping for the one left most in the picture to be female.No, they are not A. alacrina but rather some form of A. cf. personata. I can't tell for sure whether one of them is a female, but I tend to believe that all are males.
What makes me think that your fish are males is that all have the rear soft parts of the dorsal fins elongated. Moreover no fish shows black anterior edges of the ventral fins.What will be the distinguishing features to look out for to sex A. Personata?