Three specimens of Plectranthias retrofasciatus Fourmanoir and Randall, 1979 and one specimen of P. randalli
Fourmanoir and Rivaton, 1980 were collected by first author from fish market, Bitung, North Sulawesi on June
and September 2010. The specimens were deposited at LBRC-F, the reference collection of LIPI Bitung, Technical
Implementation Unit for Marine Biota Conservation, Research Centre for Oceanography, Indonesian Institute of
Sciences, Bitung, Indonesia. Plectranthias retrofasciatus is closely related to P. megalophthalmus and P. knappi,
in sharing some morphological characters as snout length and interorbital width, while P. randalli differs to other
species by having a moderate deep body proportion. Initially these species known only from New Caledonia for P.
retrofasciatus and Chesterfield Islands and southern Taiwan for P. randalli respectively. The two species of anthiine
fishes collected from Bitung, Indonesia bringing the total number of species of this genus known in Indonesia to six.
