I enlarged the image, but that just made things pixilated and with the light reflection made it more difficult for my tired old eyes, than just viewing the original photo. I pulled the following vid off of youtube, that might help you as well.
Hi
I vent 3 fishes yesterday and with my scianochromis fryeri it was easy to see both same holes. My taiwan reef seems to be female ( one of holes looks a bit bigger and it have diffrent color) but with this eureka it was hard to see the actual hole because of this bronze coloring below te belly.
But Im also can finally agree that it is male. After throwing him back to main tank he start to act lika a male (he have to fight a little bit for hid position in group).
Sorry for being a pain in ...
And thanks a lot for patience.