Oh I have some updated pictures and info.
The green lacs that I sell/ obviously, from Argentina are all similar, they look green in black background tank, and look silver in a white or light colored background.
The cf. I don't have one now, I cannot comment.
With the cf. lacerdae, I thought I had a greenish one and a reddish one. Well the reddish one, one of the nicest ones I was going to keep, I accidentally sold it. Now its about 8" big, and the jaw is different, bigger teeth, it doesn't swim as much as the green ones. and the chin and bottom fins are gold/yellow color. I'll post pictures soon!!