Hi again....
Well....the first one is a cf.lacerdae for sure...and I "think" the second one is also a cf.lacerdae, but the angle is not the best (even if the lines looks to be parallel as they does on the cf.lacerdae).
But the biggest problem is if YOU dont think that both are cf.lacerdae and still think that one of them looks as a cf.malabaricus.
I think you said that you bought one of these from Ken and the other one from John....right?
Well....my solution is;
I must send some uruguayan fishes to USA in march....and I can send 1 cf.lacerdae to you....for free of course....and then you can return what you think is a "mala" to Ken or John.
I hope you like the idea?
Regards!
Felipe