About how many fruit flies, on average, should my 2 week old gray tree frogs be eating? I watched one the other night catch 10 in one sitting, before he disappeared from view. I'd just been shaking the flies from the culture cup into the vivarium, and all seem to eating well and happy. However, by morning I'll find about 30 of them (the flies, not frogs) drowned in the water dish ("stupid fruit flies," my 3 year old says). It's wasteful for one thing, and for another, I'll be out of town for a couple nights and want to make sure my frogs' caretaker has a good idea of what might not be enough.

I'm currently culturing and feeding melanogaster because they seemed easier to culture. I hadn't played with fruit flies since high school . I do have a few hydei left from the "pet store." Those seem better equipped to rescue themselves because of their larger size.

Also, about when should I consider feeding them larger fare?