The Collaborative International Dictionary of English v.0.48:

Garfish \Gar"fish`\, n. [See Gar, n.] (Zool.)
   (a) A European marine fish (Belone vulgaris); -- called
       also gar, gerrick, greenback, greenbone,
       gorebill, hornfish, longnose, mackerel guide,
       sea needle, and sea pike.
   (b) One of several species of similar fishes of the genus
       Tylosurus, of which one species (T. marinus) is
       common on the Atlantic coast. T. Caribb[ae]us, a very
       large species, and T. crassus, are more southern; --
       called also needlefish. Many of the common names of the
       European garfish are also applied to the American
       species.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Greenbone \Green"bone\, n. [So named because the bones are green
   when boiled.] (Zool.)
   (a) Any garfish (Belone or Tylosurus).
   (b) The European eelpout.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Eelpout \Eel"pout`\, n. [AS. ?lepute.] (Zo["o]l.)
   (a) A European fish (Zoarces viviparus), remarkable for
       producing living young; -- called also greenbone,
       guffer, bard, and Maroona eel. Also, an American
       species (Z. anguillaris), -- called also mutton fish,
       and, erroneously, congo eel, ling, and lamper eel.
       Both are edible, but of little value.
   (b) A fresh-water fish, the burbot.
       [1913 Webster]