Ventral/Pelvic fins appear to be rounded, that would make it female. Diet and environment can often cause females to have some male characteristics, but the Pelvic fins are the only sure way to sex them. In fact, that's why the genus is named Pelvicachromis. First rays on a male are elongate, giving the fins a pointed appearance, while the first ray on females is short, causeing them to appear more rounded.