We all know how difficult it is to identify the sex of these fish, so please post a picture in here and we'll try to help you (or at least give an educated guess!).
1 male
2 female?
3 male
4 male
5 female?
6 male
7 male
I can't tell how big the fish are as I don't know how big the coin is!
They look fairly big but I can't tell if some are maturing males as they look to have fairly hairy fins,
See what others think.