lol, well i guess most of us have to learn the hard way not to impulse buy
Yeah in that small a sump space, pretty much any of the smaller mantids would be fine. Hard part is actually getting one because most lfs and online dealers don't even try to ID properly. man, I was sort of avoiding having to do this, but I happen to have a G. smithii that I am looking to get rid of. It has red intersegmental lines (an uncommon colour morph) and is a gorgeous interactive specimen. 40$. throw me a pm if you're interested.