Thanks for uploading those! I took a look and I suspect Adspersus(Giant), due to the coloration and the fact that the dorsal stripe appears to be disappearing. I'm going to include a link to a very interesting thread that contains a lot of useful info and comparisons between the species, complete with plenty of pictures so you can check for yourself.
http://www.frogforum.net/showthread....us-Differences
It can be a tiny bit confusing, but I found it a very interesting read. Most of the good info and pictures start on page 2-3.

As for gender, it looks like it's 2+ months old, gonna say 2-3. Mine is a little over 4 months old and he croaks most nights around 10-12 PM, a low rumbling croak that sounds a little like a belch. If you keep him(or her) in a place you frequent, like your room, your frog should start croaking(or not croaking) fairly soon.