They look so sweet. I was cracking up on the one video you have of the Rhombo pilfering the Chaeta's moth.
I tend to get very attached to my mantises, so slow to grow and long lived is a good thing to me. I enjoy getting to spend the extra time with them. I've noticed a lot of people tend to keep this species communally. Is there a general rule of thumb about how much space one should have per a mantis to meet their needs as adults?
I'll admit, I've always been very hesitant to do a communal set up. I get so attached that I would be heartbroken if I walked in to discover one of mine had decided to munch on another.