Ok, thanks Steve, thinking McCoskers and Blue flasher introduced at the same time. So do i have this right, only being kept with a same species female fairy wrasse helps male fairys keep their color? My LFS just got in a blue sided fairy wrasse I really like, but i may just go with the two flashers instead of all 3.
The "blue toned" fairy wrasses are the most susceptible to loss of some coloration absent a female. Flasher wrasses will flash with males of a similar species (e.g. what you are planning) or display nuptial coloration in the presence of one or more females of the same species.