I only put the 3 pairs into my 90gal on Saturday. So far the Turks have laid at one end and now the Moodies have laid on the glass. I had to remove the other 2 turks as they were caught in the middle. Hopefully I can get my rack setup soon so I can separate them.
I've seen the San Merah and they are basically the same as what I have - except these are snakes.
Not too sure if there is a recognised difference or it's just a different name for the same thing. Their colour is a little better than the photos suggest they are more orange red than the brown as they appear above. The colour is still quite subtle which I really like.
Instead of the stress bars coming out and then fading the moodies tend to change to a darker orange/brown. You can see the colour change slightly based on the mood of the fish which is pretty cool.