Megalodoras uranoscopus juvenile coloring?

[thebiggerthebetter]

My current 6-pack when they were little:

 

[thebiggerthebetter]

Now they are ~1':

 

[Dreamcast]

Looks like Orinocodoras eigenmanni to me.

 

[Rafini]

I grew out a small Irwini a few years ago and I got mine at about 2". from the top you will see huge big spikey thorn like protusions. not the saw type smaller ones you see on yours. as the fish grows these spikes look less large. but on juvies they look very pronounced.