http://www.youtube.com/watch?v=xMMxAcQU9vc THIS THING IS A BEAST, LOOKS NOTHING LIKE THE MAYANS I SEEN, IS THIS REALLY A MAYAN CICHLID?
It looks like the high bodied variant I saw snorkeling in Cenote Escondido just south of Tulum, although much better fed and more striped than the wild version.
Yes cenote Escondido has no noticeable current (at least to me) and is deep (over 50ft).I believe I read an article saying that in the faster flowing more disturbed rivers cichlids will be of a more compressed variety, and in more still deeper waters they will have a more high and rounded physique.