Thats a possibility i think, does look like a jullii cory too, but the line, as you mention, is not there in your pic, maybe its a young juvenile and the line is more visible as it grows?
Yeah maybe its a reticulated cory that's the closest I've seen to what I have. It looks exactly like a Julii just doesn't have the line, same pattern though. There all fully grown cory, there quite big so its definitely not a juvenile hmmmm.