As a matter of fact, I do not believe it has any peackock in it. I know it may still be interbread, but really, it doesn't show any peacock colors,figures, ect.
To me it looks like M. auratus ...
http://www.cichlidforum.com/profiles/species.php?id=750
It seems to be a female at this point, but if it is still small, it could turn out to be a male. The males tend to be black bodied with white stripes, while the female are more yellowish with black stripes as seen in the picture above. Granted, it could still have other genes in him/her, but I think we can safely identify this as Melanochromis auratus
EDIT: After going to the link, you can change the image shown by clicking the dropbox and then selecting female or another image!