male or female?

I know this is a bad picture but theyre such fast little buggers!! You cant realy do the pointy fin/rounded fin thing on these convict cichlids to tell their sex, so I was wondering if there was another way. Any comments would be appreciated as to this ones sex. Fill in the poll as well because I think thats a fair enough way as any to decide which it is!!

 

Fletch,
It's hard to tell by the picture. Maybe this will help:

 

thanks for replying. Its a bit confusing because they all contradict one another with the colours. I guess I'll just have to see If any babies appear at any point