Here's a fun question for you guys I've never seen asked. How many complexes are there of Cirrhilabrus and what are they?
I am not sure on how official or frequently complexes come up within the scientific community, but with hobbyists can be quite valuable. I am aware of 9 complexes.
There is the temminkii complex which includes temminkii, punctatus, beauperryi, balteatus, katherinae, and 2 as of yet unnamed species.
Cyanopleura complex which includes cyanopleura, ryukyuensis, solorensis, aurantidorsalis, luteovittatus, and cf. cyanolpeura.
Rubriventralis complex which includes rubriventralis, joanallenae, naokoae, morrisoni, and 2 unnamed species off of the coast of Africa, C. sp 1 and C. sp 2 respectively.
Johnsoni complex which has johnsoni, lunatus, squirei, cf lanceolatus, brunneus and the possible speciation of Phillippine versions of lunatus and cf. lanceolatus.
Lanceolatus complex of lanceolatus, roseafascia, sanguineus, and blatteus.
Lubbocki complex which contains lubbocki, adornatus, flavidorsalis, condei, rubripinnis, marjorie, wallindi cenderwasih, katoi, walshi, and the possibility of another yet unnamed species.
Bathyphilus complex of bathyphilus and nahackyi.
Scottorum complex of scottorum and melanomarginatus
Pylei complex of al of the pylei variants, rubrimarginatus, clairei, and lineatus.
Filamentosus complex of filamentosus and tonozukai.
There is also the Exquisite, which currently is one species with many regional variants but will likely be split into multiple species to form its own complex. There are also odds and ends species that as of yet are unique enough to not be grouped into a complex.