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.
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dogfish

[′dȯg‚fish]
(vertebrate zoology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Caption: Jim Koch of Boston Beer with Sam Calagione of Dogfish Head.
Gwent SAC held their match at Barry where Mike Mather took the honours with two hounds and a dogfish for 6.98kg.
What Dogfish Head leveraged to grow its brand was a unique take on beer production and a rabid local following around its original Delaware location.
Chief executive of Vidatec Greig Johnston said: "Dogfish has been a fantastic success story within the Scottish technology sector for almost 10 years.
Male velvet dogfish are thought to mature between 493 and 522 mm in total length (TL) on the basis of clasper length and calcification of claspers (Krefft, 1980; Yano and Tanaka, 1984).
In addition to the keynote address, Sam will welcome 40 bloggers to Coastal Delaware for a BBC pre-conference excursion to Dogfish Head Brewery, a production brewery and distillery featuring a tasting room and food truck, the Dogfish INN, a beer-themed inn on the harbor, and Dogfish Head Brewing & Eats, an off-centered brewpub and distillery.
Age data contribute to knowledge of spiny dogfish life-history parameters and reproductive potential (Gallucci et al., 2006).
We captured Spiny Dogfish of both sexes, and based on their size distribution it is likely that they were individuals reaching or at sexual maturity (Jones and Geen 1977).
Although the program started in 1963, we focused on our study on spiny dogfish stomachs (n = 43,489) collected from 1981 to 2000 throughout the entire range of the Northeast U.S.
The Dogfish Head Ale Bus was first conceptualized by Sam Petrella, 25, for a capstone program at the Universities at Shady Grove, the Washington Post reported.
Anglers are catching huge numbers of spiny dogfish as they fill the bottoms of our cold water commercial fishing grounds and Cape Cod Bay.
Under the Illinois Beer Industry Fair Dealing Act, Dogfish was required to pay Louis Glunz "reasonable compensation for the fair market value of the wholesaler's business with relation to the affected brand or brands." Fair market value, as always, is in the eye of the beholder, so the case wound up in court in September, as Dogfish Head vs.