I personally don’t think it really matters. Even though they have been shown to be somewhat social animals, they are perfectly capable of living happily by themselves. I keep all my animals each in their own tanks, and only put them together for a few months out of the year during the breeding season. Hatchlings are also all raised individually. It really is your own preference as setting up groups (as long as there is only one male) works just as well as single setups. I prefer the single setups because I feel there is less competition for food, shelter, territory, etc. In other words there are no hogs to worry about, so everybody is fat and happy…hehe.