I've got 3 angels in my 3' tank that have been there for 6 months or so. They've grown to a decent size and have had a somewhat 'feisty' relationship the last couple of months. All 3 of them have had a go at each other at sometime, but one (a gold) had generally been the boss. The last few days there's been a change. One of the others has taken to hiding behind the plants in the corner while the other two hang about in the middle. These two stll have an occasional pop at each other but are generally peaceful. When the one in the corner comes out both of them pick on him until he goes back to his corner. It would seem that a pair have formed. I feel for the other one though and am wondering whether I should rehome him/her. I still can't tell the difference between the 'pair', apart from one's gold and the other's stripey. I'll try and get a photo and maybe someone can tell me.