Other than the application of a computer to replace the female fish, this is hardly news. This behaviour in this species has been well known for decades, as a quick glance into the book section of any decent Pet Shop would tell you. \n\nBreeders of Pelvicachromis species have known that the female dance was an essential component of courtship for almost a century since the genus (originally a sub-genus) was first described in 1895, and information on it is widely available on the web as well:\n\n"The first sign that a spawn is likely is an intensifying in the colour of both fish, but especially the female. Her belly will darken, becoming deep purple in colour and it is usually she who initiates spawning, dancing in front of the male and displaying her purple belly to entice him to spawn with her." \n\non line at http://www.seriouslyfish.com/profile.php?genus=Pelvicachromis&species=taeniatus&id=80\n\nIf this is considered new knowlege in this field, I am going home to dust off my Cichlid breeding books and apply for a Grant!