I know we read a real lot about the males being the ones that call? I'm not so sure this is the easiest method to sex this species. If so....then I have all males, none of which have ever developed nuptial pads. However, I make no attempt to provoke breeding. One is much larger. My oldest ( Ruby) is the smallest w/ an obvious darker throat. The larger one's throat is pure white.... BUT it calls as well. I have heard 2, obviously, different calls. Plus, they will all make a different squeak if startled. I think size is the give away!

Good luck with your plans to breed !

Here is a photo of one of my black eyed tree frogs ( Boggie) ( A moreletii)
Calling and the pads appeared at the time I posted the photo. (?) Note his age in my signature 11/2009.
He was a sub-adult when I purchased him.

http://www.frogforum.net/tree-frogs/...tial-pads.html

Lynn