Plectranthias gardineri is a species of fish in the family Serranidae occurring in the western Indian Ocean.Randall, J.E., 1980. Revision of the fish genus Plectranthias (Serranidae: Anthiinae) with description of 13 new species. Micronesia 16(1):101–187.
Size This species reaches a length of .
Etymology The fish is named in honor of British zoologist John Stanley Gardiner (1872–1946), who led an expedition to the Indian Ocean in 1905, during which the type specimen was collected.
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