Source : Webster's Revised Unabridged Dictionary (1913)

Spadefish \Spade"fish`\, n. (Zo["o]l.)
   An American market fish ({Ch[ae]todipterus faber}) common on
   the southern coasts; -- called also {angel fish}, {moonfish},
   and {porgy}.

Source : WordNet®

spadefish
     n : deep-bodied disk-shaped food fish of warmer western Atlantic
         coastal waters [syn: {angelfish}, {Chaetodipterus faber}]
     [also: {spadefishes} (pl)]