dogfish


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Related to dogfish: bowfin

dogfish,

name for a number of small sharks of several different families. Best known are the spiny dogfishes (family Squalidae) and the smooth dogfishes (family Triakidae). Spiny dogfishes have two spines, one in front of each dorsal fin, and lack an anal fin. The common spiny, or piked, dogfish (Squalus acanthus) is found in most oceans of the world and is particularly abundant in shallow, temperate waters. Its gray skin is speckled with white. Females of this species may reach a length of 4 ft (120 cm) and weigh 15 to 20 lb (6.3–9 kg); males are smaller. The spines in this species contain venom that can cause a very painful wound. Spiny dogfishes migrate seasonally, preferring water within a certain temperature range. They feed on a variety of fishes and invertebrates and cause great damage to populations of commercially valuable fish. In Europe they are fished for food. Other members of the spiny dogfish family are found in deep water. The smooth dogfish (Mustelis canis) is found on the Atlantic coast of America from Brazil to Cape Cod. It is gray in color and grows to a length of about 5 ft (150 cm). Of no commercial value, it migrates seasonally and feeds on small fishes and invertebrates. Like the spiny dogfish, the smooth dogfish is much used for dissection by students of vertebrate anatomy. The smooth dogfish family also includes two small sharks abundant on the Pacific coast of the United States, the brown smoothhound (Rhinotriacis henlei ) and the leopard shark (Triakis semifasciata); the latter is strikingly marked with black on a tan background. The name dogfish also refers to certain unrelated bony fishes (see bowfinbowfin,
primitive freshwater fish found in the Mississippi basin, the Great Lakes, and E to Vermont. The bowfin has a light covering of rounded, overlapping scales, a large mouth, and sharp teeth.
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). The dogfish sharks are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Chondrichthyes, order Selachii.

dogfish

[′dȯg‚fish]
(vertebrate zoology)

dogfish

1. any of several small spotted European sharks, esp Scyliorhinus caniculus (lesser spotted dogfish): family Scyliorhinidae
2. any small shark of the family Squalidae, esp Squalus acanthias (spiny dogfish), typically having a spine on each dorsal fin
3. any small smooth-skinned shark of the family Triakidae, esp Mustelus canis (smooth dogfish or smooth hound)
4. a less common name for the bowfin
References in periodicals archive ?
Spiny dogfish have experienced varying levels of exploitation since the reporting of commercial landings in the 1960s.
Spiny dogfish ages are not always equal to the number of counted bands for two reasons: 1) bands are deposited during embryonic development, and 2) because the external spines can become worn or can break off.
Most important, Massachusetts marine fisheries officials viewed the explosion in dogfish population as yet another threat to already depressed fish stocks such as cod and haddock.
Sam Calagione, of Dogfish, said: "I do creative work with beers.
Ivor Smith was runner up with a dogfish and a pollack weighing 1.
People like Sam and Dogfish help to push the boundaries of beer, and it has been fun working with him and the Dogfish crew.
Apart from the dogfish and ray, there were plenty of large whiting and codling to 1.
Not only is Dogfish the world's strongest beer it is also the most expensive - at a sobering pounds 6.
Interest in sharks, particularly the spiny dogfish (Squalus acanthias), is not new.
Lee Byrne's spotted ray and dogfish were worth 15 points for second place and Shane Boxall was third with a conger, a dogfish and 10 points.
The goal is to build a short film competition that is as far from the mainstream as Dogfish Head's 90 Minute I.
According to Dogfish founder and President Sam Calagione, "We decided to initially launch our 75 Minute casks in select accounts in key markets including New York, Philly and Boston, as well as our Rehoboth Beach brewpub.