crayfish size question

CPOs are pretty cool. Got 2 of them from msjinkz and shes pregnant within 3 days! no complaints there. The tiny 1" male however loves to raise its tiny claws at me...grr. and they're attacking my BN for a small cave under driftwood. Very cool lookin invertz if you ask me but aggressive to owner i guess...I usually just put those make-up mirrors in front of them to scare them away. its funny how it cowers away after awhile.
 
to answer your question. I believe jinkz sent me a full grown female and shes about 1.4-1.5" only. I got 2 in a 12 gallon eclipse.
 
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