I believe the "rubromarginatus" is a FW fish.
I have a Cirrhilabrus rubrimarginatus and it isn't a common fish and the supermale commands a hefty price. When I bought mine at the time it appeared to be a female or a sub-male which are usually much cheaper but to my surprise it has become a full fledged male and his color is beautiful. I'm sure if I added a female or two the lighter colors would really come out.
These fish don't ship well particularly when adults and they are JUMPERS !
I have been fortunate enough to be home when mine jumped several feet out of the tank when my canopy was open, so if you have an open top I would pass on these fish.
