Plectranthias alleni, also known as Allen's perchlet, is a species of fish in the family Serranidae occurring in the eastern Indian Ocean.Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p.
Size This species reaches a length of .
Etymology The fish is named in honor of ichthyologist Gerald R. Allen (b. 1942), of the Western Australia Museum in Perth, who provided the type specimens to the author knowing that the species was an undescribed one.
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