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Your fish seem to be the undescribed species Apistogramma sp. "Black Chin"/Schwarzkinn. It shares some similarities with A. juruensis that have not been exported for a while. The most prominent similarity is that the spot at the tail root (caudal spot) is separated from the stripe along the side, as opposed to A. cacatuoides that has a continous stripe.
The males of A. juruensis have blue lips like A. cacatuoides. The males of your species have yellow/orange lips.
Your fish would have to be exported from Peru, where they occur naturally.