I have to pixies a female and male my male is 8+ inch 800+ grams and my female is 4 1/2 inch and 300 grams i got them both at the same time and have hade them in the same cages ever sence when i got them thay both wear no biger than a haif doller the only time im ever worryed About him hurting hur is durning feeding and even then i dont seperit them so yes it can be done you just have to keep a good eye on them