
• (n.) The Crenilabrus melops, of the British coasts; -- called also golden maid, conner, sea partridge. • (n.) The Pagrus, / Chrysophrys, auratus, a valuable food fish common in the Mediterranean (so named from its golden-colored head); -- called also giltpoll. • (n.) A marine fish.
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http://thinkexist.com/dictionary/meaning/gilthead/

Gilt'head` noun (Zoology) A marine fish. The name is applied to two species: (a) The Pagrus, or Chrysophrys, auratus , a valuable food fish common in the Mediterranean (so named from its golden-colored head); -- called also giltpoll . (b) The Crenilabrus melops
Found on
http://www.encyclo.co.uk/webster/G/27

The gilthead (Chrysophrys aurata) is an acanthopterygious fish of the Sparidae or sea-bream family common in the Mediterranean. It has strong grinding teeth which it uses to crush the shells of the molluscs on which it feeds. It has a yellow band which extends from eye to eye, and typically weighs nine kg.
Found on
http://www.probertencyclopaedia.com/browse/BG.HTM

any of several marine fishes having gold markings, as a sparid, Sparus auratus, of the Mediterranean Sea.
Found on
https://www.infoplease.com/dictionary/gilthead
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