Woah. I don't keep ADFs and I'm not terribly familiar with sexing them. But Flipper looks very thin. Emaciated even. What and how often are you feeding him/her? How old is it?
He looks skeletal with every bone and joint protruding! His left knee looks particularly bad. At first I thought these were photos of a dead frog....
I think you should set up a hospital tank and try to get some nutrition into this guys asap.