Sorry sounded a bit sarcastic, but really not meant too be. I just keep adding info as I experience or learn it. I do appreciate the previous comments as that is how we all learn something new everyday.
I am lucky to have had at least four of each, GBR, LFR, GR and have been experimenting with temps and water qualities. I am finding they can survive in lesser quality waters, but when stressed ( chased by spawning couples), several succumbed to fungus ( no microscope available) beneath their chins and bottom lip and perished with in three days. Not sure if it was a genetic stock issue or not.
I have found the surviving ones (4 out of 12) do prefer discus-quality like water, which leads to me to hopeful answer my own question and I believe they are part of the M. ramirezi family. In discus quality water (warm-soft-slow) they are quite beautiful and active, but perhaps both kinds would benefit from such waters.
Totally unscientific, I know, just my experience.