Pearlscale butterflyfish
…exact combination of hues and some small pattern details. 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…