The pair above, is Geo iporaguense also of the "braziliensus" complex, the female is in the foreground, note the difference in her cranial profile, much more gentile. This is the case with many Geophagines, the males is much more steep, sometimes a slight hump.
And it seems color differences are very subtle until the are older.
Some more Cranial gender differences in the Geophagines.
Below Gymnogeophagus sp "yerbaiito" female up front
and below Gymnogeophagus sp Paso Pache pair male in front.
To me, yours looks female, but that said.....if there are more dominant cichlids in the tank, males will often show take on a female cranial shape, so it is not always clear cut.