Abudefduf caudobimaculatus
Abudefduf caudobimaculatus, commonly known as the Okinawa sergeant, is a species of damselfish. They are in the family Pomacentridae. The species is native to the Indo-Pacific. It is believed to live from East Africa to Yakushima and Lord Howe Island. This includes Taiwan, where it lives in the same areas with its congeners Abudefduf nigrimargo and A. vaigiensis), and Indonesia.  The species was first described in 1939. It was later thought to be the same as Abudefduf vaigiensis. In a 2017 review by Kunto Wibowo of the Indonesian Institute of Sciences, Hiroyuki Motomura of the Kagoshima University Museum, and Minoru Toda redescribed the species as a separate species. Even after this, the name is still listed by FishBase and WoRMS as a synonym of A. vaigiensis.