Moonfish \Moon"fish`\, n. (Zo["o]l.)
   (a) An American marine fish (Vomer setipennis); -- called also bluntnosed shiner, horsefish, and sunfish.
   (b) A broad, thin, silvery marine fish (Selene vomer); -- called also lookdown, and silver moonfish.
   (c) The mola. See Sunfish, 1.

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: Webster's Revised Unabridged Dictionary (1913)