oar·fish /ˈorˌfɪʃ, ˈɔr-/
  Oar·fish n. Zool.  The ribbon fish.
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  oarfish
       n : thin deep-water tropical fish 20 to 30 feet long having a
           red dorsal fin [syn: king of the herring, ribbonfish,
            Regalecus glesne]
       [also: oarfishes (pl)]