I think it's too young to sex
How is a 6" CB Sen too young to sex? That's nonsense.
@OP, it's a female Sen from the looks of it. (From your photos)
Thats what i believe honestly i would wait untill it gets bigger IMO but if you want to sex it now thats fine i was just saying IMOThis.. Dr B I said it before and if TGM says it you can believe it.. Sens can easily be sexed at that size. Even at 4" or less it is possible.