This one was bought a few months ago along with another two. All three look different but the mouths are the exact same. These were sold as goldline I paid almost nothing for them so it is not a huge gamble like some have taken
I have no idea anymore as to what these fish are. I think the only one I'm sure about when looking at them are the " xingu" type. The rest are not easy to id.
I'm pretty confident is saying that your little guy and some of my group are P. Ambrusteri.