Plectranthias alleni

Plectranthias alleni, also known as Allen's perchlet, is a species of fish in the family Serranidae occurring in the eastern Indian Ocean.

Size
This species reaches a length of 6.3 cm.

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.