Not sure on the exact gender but it is close to full grown. It likes roam around at night not so much during the day. Feeds great and agressive.Congrats! I'll be getting my first Australis (Hector) very soon. I have a 6i Androctonus Amoreuxi. Probably my favorite scorpion. Active, aggressive, and a big eater. Can't wait to get an Australis. What's yours like? Male/female, fully grown? Is yours very active?