Well thanks all for the replies
I luckily had a book on inverts with a pic of something similar on the front
When I read they can crack your tank and break fingers I thought I better take action, only just got the tank up and running
Now have to rearrange all my rock
I luckily had a book on inverts with a pic of something similar on the front
Now have to rearrange all my rock

That is unusual, most things like this bolt into a hole in the live rock and refuse to come out from there...It is "cute" I suppose, but mantis will presumably need medium-thick Acrilic or overkill thick glass tanks to be safe keepping them if I remeber right... I've seen videos of these guys breaking pens with their "clicks" 
/www.youtube.com/watch?v=BV9z5e1r2KM&NR=1"]http
