I can't tell by the pics if male or female. If there are little spurs on the back feet then it is a male and if there are none then a female. Hope that is some help to you for sexing. As for age my "guess" is about 2-3mo old!
Welcome to the forums Gax! That my friend is a female, and judging by the size my guestimate would be between 2 - 3 months btw nice looking little girl you have there!
Im goin for female too and for age she looks like my buddys did when he bought her and she was 2 months so i would have to say 2-3 months.. but in no way am i an expert
thanks for the replies guys.. i actually exchanged her for a male as i have heard about the problems with the eggs getting impacted in the females... the guy i have now is about 1.5 times bigger than the female.. and i can definitely see the spurs on the back feet.