Looks like a non-hybrid JD to me.
Mine looked exactly the same when I bought her.
They can change colours drastically from a "normal pattern" where you can see the occeli and barring to a "fright pattern" that turns the fish almost completely black! Awesome and beautiful cichlid. *SUPERSMIL
Your baby will need a 40gl tank min to itself as an adult and the standard 55gls if you want a pair or to have tankmates for it. I've kept JD's successfully with cons, firemouths, severums, chinese algae eaters and other JD's. Most people think of them as brutish violent fish but more often than not they're very shy and reclusive.