Your welcom. Another sugestion is to Put some plwer pots in the sand so they could hide in them as well. put 3 or 4 of them in. Then the ones that have teritory might let the others have a pot to hide in. lol Yes the stripes would be from the stress. Do they kind of look alittle greyish to. If so the females tend to have them a lot to so you might be lucky and have a male and female.