I guess I need a male...
Several challenges here. First, relying on a supplier to select a male in a species that doesn't manifest marked sexual dimorphism until mature. Even then, it can be perplexing. You yourself thought that your she was a he. If you did land a male it would be best if he was mature and larger than your female, as most Aequidens metae males are. Then I would suggest a new setup for them, one that she doesn't already claim as hers. Failing that, I'd remove her from the current tank and change up the scape so there's nothing there she recognizes as her old home. And provide cover. I'd introduce them to each other via a tank divider and see how they respond to each other. If that goes well, I'd remove the divider and monitor closely.so yellow acaras are available again... I asked if I could specify a male ( they haven't replied yet ) if this one is laying eggs with no one around to fertilize... would she most likely accept "a" male, or will I likely end up with WW-3??? this female has always been tank boss, if there were other cichlids around
honestly, I'm not good at sexing fish.... easy ones, OK... but, if they look the same, most often I don't have a clue