Hey!
I absolutely love tokay geckos and after few months of searching for them I got myself my first (and not last) pair!
They are captive bred, around 4 years animals or at least this age was told me when I was purchasing them. They lived in one cage for at least 2 years - no aggression at all.
The female is bigger than the male, sitting at around 118 grams, male 93 - they are 100% opposite sex, the scales are right 
They were together all the time, basking, sleeping etc etc. But the male is not calling - at all, and he is smaller than the female. I have them few months now and I didnt hear him at all. I decided to separate them at this moment, to see if the male will start calling, but I don’t know where to go from here. Should I keep them separated or keep them together? What about their size difference? What would be the smartest thing to do at this moment with them?
TIA!
Maybe let them be for now and research what winter is like in their native range. Then late this year separate them for a month or two for a cooling period.
I don’t know a lot about Tokays, although I have kept one. It is possible he doesn’t call because he knows where she is. Or he’s a quiet romantic.
Keep watch on her belly. You should be able to see eggs through her abdomen if she is already carrying.
Best idea is lots of research. And, of course, find an experienced keeper. I may be way off on the brumation thing and they may not need it.
Remember. Absence makes the heart grow fonder.
no need to separate them, theyll do their thing. My full grown male hasnt called for years since he was first paired with his female.