how do I find out if my crayfish is male or female?

[Cantra]

its only an inch long so i'm also wondering how big they have to be to be able to find out about that.

[KrytterKrys]

well it might be kinda hard to tell at that size but between the back legs on female there will be a "hole" and on males what looks like a small pair of legs..heres a few examples...
10951
10953
FEMALE
10954
MALE

[Cantra]

thanks. I'll probably just wait till it's a bit bigger to check because i don't want to hurt it by picking it up to look