I just acquired two Nikita tincs that are in awesome condition (very fat and active), but one does not seem to be feeding as well; actually I haven't really seen either eat, but I suspect its b/c I load the vivarium w/D. melanoganser and they have constant access to food. I just had a citronella pass away due to starvation; he would hunt constantly, but never catch any food (I tried 4 different food sources), and I'm paranoid the same thing is going to happen. I've only had them since Saturday, and they're in a well planted 10 gall tank. They were estimated to be about 6 months old. Could one be stressing the other? I've never seen any aggression, sometimes they sit next to each other, but most of the time now one hides while the other makes use of it's space. I'm setting up a 20 long later today, do you think I should separate them, or would the larger vivarium do the trick? I was also worried that maybe the ff are too small, I put pinheads in, but I didn't see either actually eat any, but they did both hunt. Should I try bean beetles?