\Hound"fish\, n. (Zo["o]l.)
Any small shark of the genus {Galeus} or {Mustelus}, of which
there are several species, as the smooth houndfish ({G.
canis}), of Europe and America; -- called also {houndshark},
and {dogfish}.
Note: The European nursehound, or small-spotted dogfish, is
      {Scyllium canicula}; the rough houndfish, or
      large-spotted dogfish, is {S. catulus}. The name has
      also sometimes been applied to the bluefish ({Pomatomus
      saltatrix}), and to the silver gar.