I have two in there..... They do look a bit lost!!! But, at least when they grow up, they'll have plenty of room! Have seen them eating since I put them in (I had to chuck crickets right in front of frogs) so I'm confident that they won't starve! Have also put in a larger bowl of water containing my fish. There's a water plant in there, and a piece bog wood coming out of it so pretty sure the frogs/crickets can find a way out should they fall in.