Hi Gord,
I kept my group together, though there were only six...a larger group i would probably split up so i could monitor them better....this is what i'll do with the Kweichows (by the way, one has morphed!)
As for my knowing they were eating... i found them to be real easy to feed, in fact they acted like typical Shanjing adults and would eat pretty much whenever i dropped a worm in front of them. Any picky ones i'd just remember and pay a little more attention to.