Newbie and Frenchy always hang out, theyre adorable together

Still not sure of their sex! I feel like if male Frenchy should have called by now. I had him/her since september last year, and he has not grown a centimeter. He has got to be mature. Or, SHE.

They have different looks to them aside from the size. Newbie has a different shape entirely. Bigger head, smaller waist even after all hes eaten. It looks like the weight goes to his ribs more than his stomache. Hmmmmm...

Might Newbie be a mature male??

Hard to tell... hoping one of them will call soon.