I'm not sure yet. I paid for 8 of them because I was having someone ship them to me, and I wanted to make it more worth while for them so I purchased more than I would have normally. Then, they threw in an extra two because they'd never shipped before and wanted to account for one or two dead ones, but it's a very short trip and they all survived, so there's 10 total. We'll see how they do as they grow up I suppose. A larger group of them would be nice I think, and with a large group they're gonna breed, lol. At the very least I'll keep a male and a couple females.