Newbie GT Frog Keeper & few qns

[Harold]

Hi all I joined ages ago when looking into getting green tree frogs and haven't been back on for a while but remembered when I was looking for frog stuff online
but we now have 2 GFT (year old in November) that we got in March this year
and their characters that's for sure
there in a 3ft fish tank converted to paludarium with land and water (with some shrimp)
but looking at moving to a Exo Terra Terrarium Medium/X-Tall 60 x 45 x 90 cm at some point?

when should we be able to tell if their male or female? (hoping for a M/F)
#1 frog- the bigger of the frogs croaks regularly and has for a few months
#2 frog - smaller frog croaks sometimes for only few croaks then stops (also sounds weaker than #1)

there's quite a noticeable size difference (they where the same size) is that normal?
#1 is good at catching crickets and can be a pig
where #2 struggles (we hand feed it a few to make sure they get some)

 

[Flaviemys purvisi]

Males will be substantially smaller than females and croak virtually non stop from November to February. Females are larger and I've never heard my female croak, except a scream-like distress call when grabbed. Female GTF's do not have a vocal sac like the males do. I've got 5 males and 1 female GTF.
Male GTF's also have larger tympanum (ears) than females and a special extra grasping pad on their thumbs for gripping the females during amplexus.
Growth rates vary depending on food intake like all reptiles and amphibians.

Hope this helps.