[1] : The Collaborative International Dictionary of English v.0.48

houndfish \hound"fish\, n. zool.
   any small shark of the genus galeus or mustelus, of which
   there are several species, as the smooth houndfish galeus
   canis, of europe and america; -- called also houndshark,
   and dogfish.
   1913 webster

   note: the european nursehound, or small-spotted dogfish, is
         scyllium canicula; the rough houndfish, or
         large-spotted dogfish, is scyllium catulus. the name
         has also sometimes been applied to the bluefish
         pomatomus saltatrix, and to the silver gar.
         1913 webster
see also:
galeus mustelus galeus canis houndshark dogfish scyllium canicula 
scyllium catulus pomatomus saltatrix 

[2] : The Collaborative International Dictionary of English v.0.48

roussette \roussette"\, n. f.; -- so called in allusion to the
   color. see russet.
   1. zool. a fruit bat, especially the large species
      pieropus vulgaris inhabiting the islands of the indian
      ocean. it measures about a yard across the expanded wings.
      1913 webster

   2. zool. any small shark of the genus scyllium; -- called
      also dogfish. see dogfish.
      1913 webster
see also:
russet pieropus vulgaris scyllium dogfish dogfish 

[3] : The Collaborative International Dictionary of English v.0.48

amia \am"ia\, n. l., fr. gr. ? a kind of tunny. zool.
   a genus of fresh-water ganoid fishes, exclusively confined to
   north america; called bowfin in lake champlain, dogfish
   in lake erie, and mudfish in south carolina, etc. see
   bowfin.
   1913 webster
see also:
bowfin dogfish mudfish bowfin 

[4] : The Collaborative International Dictionary of English v.0.48

dogfish \dog"fish`\, n. zool.
   1. a small shark, of many species, of the genera mustelus,
      scyllium, spinax, etc.
      1913 webster

   note: the european spotted dogfishes scyllium catudus, and
         scyllium canicula are very abundant; the american
         smooth, or blue dogfish is mustelus canis; the common
         picked, or horned dogfish squalus acanthias
         abundant on both sides of the atlantic.
         1913 webster

   2. the bowfin amia calva. see bowfin.
      1913 webster

   3. the burbot of lake erie.
      1913 webster
see also:
mustelus scyllium spinax scyllium catudus scyllium canicula mustelus canis 
squalus acanthias amia calva bowfin 

[5] : The Collaborative International Dictionary of English v.0.48

bowfin \bow"fin`\, n. zool.
   a voracious ganoid fish amia calva found in the fresh
   waters of the united states; the mudfish; -- called also
   johnny grindle, and dogfish.
   1913 webster
see also:
amia calva johnny grindle dogfish 

[6] : WordNet (r) 2.0

dogfish
     n 1: primitive long-bodies carnivorous freshwater fish with a
          very long dorsal fin; found in sluggish waters of north
          america syn: bowfin, grindle, amia calva
     2: any of several small sharks
     also: dogfishes pl
see also:
bowfin grindle amia calva dogfishes 

Dogfish >> D Words
Dogfish, definition of term: Dogfish
dogfish_pag1.html

Dogfish Shark >> D Words
Dogfish Shark, definition of term: Dogfish Shark
dogfish+shark_pag1.html

Spiny Dogfish >> S Words
Spiny Dogfish, definition of term: Spiny Dogfish
spiny+dogfish_pag1.html