I realize that the cichlids my friend Mike used in his research are African, but if you want to get insight into how any cichlid sees, and perceives color, his (and his colleagues) research could be of great interest. I put this first into the generic Cichlid section, but thought it might get a bit more action here, and to me transcends and geographical category.
http://journal.frontiersin.org/arti...=Frontiers_in_Ecology_and_Evolution&id=179528
http://journal.frontiersin.org/arti...=Frontiers_in_Ecology_and_Evolution&id=179528