You won't see it with the nems you have Tim. Once you start dabbling in CC-lineaged nems and Colorado Sunbursts, you'll start seeing what others have seen with mixing them. People mix wilds, rainbows, rose, Sherman, and black widows all day with very little issues... There's plenty of evidence with that. There's also a lot of evidence with people mixing CSBs and them slowly wasting away and dying. It happens enough that it should get anybody's attention who may plan to buy one in the future.That's pretty interesting, so is it physical or chemical warfare? I haven't seen any of my btas with their acrorhagi extended, but then again I haven't noticed any issues with aggression between my nems yet.
Nobody really knows. My thoughts are bacterial incompatibility but who knows at the end of the day.