Need ID on a macro

[00nothing]

hey all a friend of mine has this macro in her tank and i need an ID on it she has 2 small tangs a hippo and a yellow and neither seem to be touching it at all

http://img.photobucket.com/albums/0603/00nothing/red1.jpg
http://img.photobucket.com/albums/0603/00nothing/closeupred.jpg

[sylphid]

Maybe be Halymenia formosa.
http://www.algaebase.org/speciesDetail.lasso?species_id=2006