I am still thinking Aulonocara Chitande Type North. I can rule out Ruby Red and Ethelwynnae. I breed all of them so I am still saying North. It probably is a male and only guessing by the colors showing at its size. If you notice the blue line under the black line on the dorsal, Slight purple hue to its sides and the light barring on its sides those are all traits of the north. Only other possible one I can think that has blue stripe in the dorsal is a Mozambique and then it would have a white not black stripe over top. This is definately a Aulonocara AKA Peacock. The head shape even young has the double curve very slightly.