About a year ago I adopted my mother's G. portentosa colony, which was probably started in around 2005. They've been happily breeding since late spring and don't seem to care that they live in Massachusetts. I'm thinking of getting a few more to add to the colony just to improve the gene pool, since they have to be pretty inbred at this point. Are they...territorial at all? As in, are they likely to attack strange new roaches in their habitat, or will they just go "oh, you're a roach, cool" and integrate them into the colony?