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The spiny dogfish (Squalus acanthias), spurdog, mud shark, or piked dogfish [4] is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. [5] While these common names may apply to several species, Squalus acanthias is distinguished by two spines (one anterior to each dorsal fin) and ...
The spiny dogfish has broken several records in the areas of migration and gestation. This shark tends to be a highly migratory species: one shark was recorded as travelling 8,000 km (5,000 miles) after being tagged in Washington state, United States, and found again later in Japan.
The American Fisheries Society recommends the common name "Pacific spiny dogfish" for Squalus suckleyi over alternatives such as "spotted spiny dogfish" and "North Pacific spiny dogfish" and "spiny dogfish" for Squalus acanthias. [5] The maximum length of a Pacific dogfish can be 130 centimetres (51 in), and they can live up to 100 years.
Dogfish sharks: 3 31 Dogfish sharks have two dorsal fins, each with smooth spines, but no anal fin. Their skin is generally rough to the touch. [18] These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without a subterminal notch.
The name comes from squalus ... this word is the root for numerous words related to sharks such as squaline and scientific names ... 1931 (northern spiny dogfish ...
The binomial name often reflects limited knowledge or hearsay about a species at the time it was named. For instance Pan troglodytes, the chimpanzee, and Troglodytes troglodytes, the wren, are not necessarily cave-dwellers. Sometimes a genus name or specific descriptor is simply the Latin or Greek name for the animal (e.g. Canis is Latin for ...
Cirrhigaleus barbifer S. Tanaka (I), 1912 (Mandarin dogfish) Genus Squalus Linnaeus, 1758. Squalus acanthias Linnaeus, 1758 (spiny dogfish) Squalus acutipinnis Regan, 1908 (blunt-nose spiny dogfish) Squalus albicaudus Viana, 2016 (Brazilian Whitetail Dogfish) Squalus albifrons Last, W. T. White & J. D. Stevens, 2007 (eastern high-fin spurdog)
The northern spiny dogfish (Squalus griffini), also known as the brown dogfish, grey spiny dogfish or Griffin's dogfish, is a marine species of the family Squalidae, found off New Zealand's North Island. The length of the longest specimen measured is 89.9 cm (35.4 in).