Pelontrus alcocki, or Alcock's deep-reef basslet, is a species of fish in the family Serranidae occurring in the western Indian Ocean.
Size This species reaches a length of .
Etymology The fish is named in honor of physician-naturalist Alfred William Alcock (1859–1933), Superintendent of the Indian Museum in West Bengal, India, in recognition of his contribution to the taxonomy of the deep-sea fauna of Indian seas.
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