I agree with LS2012, from the profile, it looks to be female.
My P sp "Andapa" killed all its brothers and sisters while still fairly small, I've had it a little over a year.
I agree with Duanes in that it looks like a female. Initially, I mentioned that your polleni didn't look like sp. Andapa. The larger specimen in the shop and your most recent shot of yours looks more Andapa like than polleni populations based on body shape and spotting. Here's a recent pic of one of my male sp. Andapa followed by a female.