Source : Webster's Revised Unabridged Dictionary (1913)

Scup \Scup\, n. [Contr. fr. American Indian mishc[`u]p, fr.
   mishe-kuppi large, thick-scaled.] (Zo["o]l.)
   A marine sparoid food fish ({Stenotomus chrysops}, or {S.
   argyrops}), common on the Atlantic coast of the United
   States. It appears bright silvery when swimming in the
   daytime, but shows broad blackish transverse bands at night
   and when dead. Called also {porgee}, {paugy}, {porgy},
   {scuppaug}.

   Note: The same names are also applied to a closely allied
         Southern species. ({Stenotomus Gardeni}).

Source : WordNet®

Stenotomus chrysops
     n : found in Atlantic coastal waters of North America from South
         Carolina to Maine; esteemed as a panfish [syn: {scup}, {northern
         porgy}, {northern scup}]