Black edgings on caudal fin and eye size point me in the direction of Neolissichilus hexagonalepis, the copper masher. You'll find out for certain as it fills out, all the coppers I've had are greedy, fat pigs.
I agree. The last pic kinda show black on the upper and lower edges of the tail.
Lolster, good eye.
Here's my Neo Hex at that size.

