Juvenile fish can in fact resemble a mix of fish. This is especially true for some specific species...and in particular Vieja and Paratheraps type fish.
Was about to say that looks identical to my fish. Then I realised that is my fish haha, not at home over the weekend will update tommorow night. The longer I have him the darker the line along its flanks are which is starting to look alot like a Zo.
And it's looking much healthier than before. good job
change those black gravels to natural or lighter colored gravels and you'll see the colors underneath the blue.. Whatever it is there's a Hartwegi in it imo..