Hi all
I have a breeding shoal of Celebes Halfbeaks.
2 males
4 females
One of the males was more dominant than the other, so much so that the other male usually hid in a corner. They are both of similar size.
In the last few days they have changed roles and now the one that was dominant is now cowering in a corner.
I have seen them fighting on occasion.
I am just wondering is this role reversal unusual.

