The Collaborative International Dictionary
Dogfish \Dog"fish`\, n. (Zo["o]l.)
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A small shark, of many species, of the genera Mustelus, Scyllium, Spinax, etc.
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.
The bowfin ( Amia calva). See Bowfin.
The burbot of Lake Erie.
Houndfish \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 ( Galeus 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 Scyllium catulus. The name has also sometimes been applied to the bluefish ( Pomatomus saltatrix), and to the silver gar.