Gender?

[GrifTheGreat]

So I have always assumed that my older pacman Grif is a male. Mainly because he made cheeping noises when he was younger. I had read that the females didn't make any noise (I now know that isn't true) so I assumed that he was male. I've had him for a little over seven months and he just hit the four inch mark, so maaaaybe a reassessment is in order?? Here are some recent pics:

This was right after his soak. He had just peed and pooped, so he looks a lil skinnier than usual.



So... any guesses??