Well - they are sort of in seperate viv's. I have them both in a 65 gal. tank that I have divided equally down the middle. But for the two that I have, I am afraid that this is not enough space for my older adult corn. Plus they are more than 6" different in length, so I doubt it would work out anyway. I am just looking into getting another tank, probably a 20 gal. long. The problem with that is the room to put it. I would not have had this delima, but the breeder I bought them both from told me that they would be fine living together. So I went ahead and got them and now the more I read on here, the more I am leaning away from keeping them together. My adult 4 year old snow is @ 4', where as my 1 year old hypo. striped is @ 3'. Right now they have a space of 18"x18"x21" each, and from what I have read this is not enough for my big guy. hmmmmm - what to do, what to do...