Yeah I was confused at first too, I even called Pedro the day I got it. He said at this age/size they look like this, just like a black but slightly longer. The mouth is a little different and the back is not as high. I have a Peru black(same size) right next to this one. The Gibbus acts a little different its a little more aggressive than the Peru Rhom or at least most of the Peru I've owned. This Gibbus curls its tail up when looking at something or getting ready to attack.