Ah, guess you are a bit of a expert on them then 
This is a female ain't it? (ignore the algea, getting ready for a good clean):
The fish is not just a failed male that has lost his colour is it? (making him look like a girl). Reason i ask is because the male keeps going for his/her eyes? Seen the odd nip between male and females but not constantly going for the eyes.
Just been sat watching for the last 5 minutes.

This is a female ain't it? (ignore the algea, getting ready for a good clean):
The fish is not just a failed male that has lost his colour is it? (making him look like a girl). Reason i ask is because the male keeps going for his/her eyes? Seen the odd nip between male and females but not constantly going for the eyes.
Just been sat watching for the last 5 minutes.