If you get a straight side profile pic, I may be able to help. If you can't, there is a way that works frequently that you can do yourself. Before the first meal of the day, look down at the fish from above. Females should have a bulge in the abdominal area while males should look like a straight flat line from top to bottom. This method must be done before feedings as a stomach full of food will also look like a gravid female from above.
Hope this helps