Hmmm, preferably I suppose it'd be best for them to each have their own cage. But if there's room...why not. It can sometimes stress them out to be in cages with each other, but usually thats when you cram two in a 30 gallon. So you got to watch out for stress. And before you ever house them together allow a 3 month quarantine. Right now I have a yearling male in a 5x2x2 cage, and two hatchling females in a 20 gallon. In 6 months I'm moving them in with the male.