reguardless of what other wrasse's you have and thinking adding new one's that are listed as more to the docile side, does not mean it will not cause a problem, ive been doing wrasse's for about 6 years and have easily had 20+ different species, from more readily availables to some of the upper end wrasse's to un-identified species, all can be great and that 1 additional fish can completely change the attitude of the whole tank, my supermale flame is a perfect example, most wrasse's he pays no attention to, but any rhomb's ive added he has went directly at them beating them badly,as well as a few other species of wrasse's. and flames are more to the docile side