Plectranthias alcockiPlectranthias alcocki, or Alcock's deep-reef basslet, is a species of fish in the family Serranidae occurring in the western Indian Ocean.SizeThis species reaches a length of.EtymologyThe fish is named in honor of physician-naturalist Alfred William Alcock, 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.