 Other members of this lineage are the Atoll ("C. mertensii"), Eritrean ("C. paucifasciatus") and Seychelles butterflyfishes ("C. madagaskariensis"), which are closer related among each other that any is to "C. xanthurus".The "crowned" "Chaetodon" are a clearly recognizable clade, but their further relationships are otherwise less clear.They were often placed in the subgenus "Exornator", or considered a distinct subgenus "Rhombochaetodon".