I was under the impression that the Atabapo were very similar to severus in terms of the mouthbrooding habits and the body shape/finnage/etc. I'm voting that it's some type of severus, whether Atabapo or not, because of the shape, the black mark under the eye, and the spots that are starting on the gill plate. These are all characteristics of my Atabapo female. The only thing it seems to lack is the red coloration, instead showing blue on the body. Interesting fish.
You can see mine in my avatar. She has a similar bar pattern to yours as well (the very dark bar through the lower back, then two more on the caudal peduncle toward the tail).