Yea, PM Yabbadoo. The species in that size range are a little hard to come by in the states, and a lot of them have more specific requirements than the other Cherax or NA species. From my knowledge, most of those crays are pretty aggressive, but Yabba will give you info down to the tee. You may also want to check out crayfishmates.com, they owner ("crusty") is pretty much the end all for information on crayfish, especially Aussie species (which is what you're going to be looking for). ^_^