is there a way to know if a sling is male or female

[DooM_ShrooM]

i know that this question is asked before somewhere sometime in this same site but .. i can't find it... i'm just asking coz i'll be buying a sling tom and i would like it to be female so is there a way to know:?

 

[DooM_ShrooM]

ps. the size of the slings are about 3 cm so is it possible to tell?:?

 

[mcluskyisms]

ps. the size of the slings are about 3 cm so is it possible to tell?:?

I believe at that size you can get a fair idea from a moult under a USB microscope and sometimes even from a ventral shot, why not post some nice clear pictures