Rusty cichlid?

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I have seen different strains/collection points/variations within species. Not all male rusties get the dark purple down their side.

Alternatively, it could be a female. They are less likely to get the purple.
 
I've seen rusties in all different colors, from all brown like yours, to one that I have that in certain lights looks like a female cobalt zebra (dark blue). The only thing that looks off to me in your photos is that the fins look black like a Varient of L. Caeruleus. Possible Lab/Rusty hybrid maybe???
 
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