Differentiating between Peacocks can be nearly impossible. There are a number of Aulonacara species and they have been hybridized repeatedly. I'd venture to say there are 100's of color varieties of Aulonacaras. Without breed information i'd be tough to say exactly what it is.
When asking about pictures 2 & 3 I think the question was more about is that 2 pictures of a single fish or is it 2 pictures of 2 fish of the same color variety?