The Florida Museum is open! The common name “dogfish” originated from fishermen who described these fish as chasing smaller fish in large dog-like “packs”. In general, the spiny dogfish poses little if any threat to humans. Taxonomy and Nomenclature Kingdom: Animalia : Taxonomic Rank: Species : Synonym(s): Squalus fernandinus Molina, 1782 : Koinga kirki Phillipps, 1931 : Squalus tasmaniensis Howell Rivero, 1936 : Common Name(s): cazón espinoso común [Spanish] piked dogfish [English] spiny dogfish [English] galludo espinoso [Spanish] aiguillat commun [French] dogfish [English] grayfish [English] … gordo (2008). Larger species of sharks as well as seals and killer whales, although in fewer numbers, also feed on the spiny dogfish. First dorsal spine origin is behind the pectoral rear tips. Aging and life history traits of the longnose spiny dogfish in the Mediterranean Sea: New insights into conservation and management needs. No subterminal notch on the caudal fin. Taxonomy is a field of science that involves classifying and naming species. The average size of the spiny dogfish is 28-39 inches (70-100 cm) with adult males ranging from 24-35 inches (60-90cm) and adult females from 30-42 inches (76-107 cm) in length. The caudal fin has asymmetrical lobes, forming a heterocercal tail. Dogfish are preyed upon by cod, red hake, goosefish, other spiny dogfish, larger sharks, seals, and orcas. This program is the most extensive tagging study conducted for a shark species. Mating typically occurs in offshore waters with fertilization occurring internally. The victim was a 54-year-old professional fisherman injured after handling a spiny dogfish of the genus Squalus (called the ‘cação-bagre’ or ‘shark-catfish’ by the local fishermen) ().He was injured near the little finger in his left hand by the spine anterior to the dorsal fin (Fig. In the recent past[when?] The spiny dogfish was originally described as Squalus acanthias by Karl Linneaus in 1758. This includes data values and the controlled vocabularies that house them. In 2010, Greenpeace International added the spiny dogfish to its seafood red list. The Pacific spiny dogfish is a common species of the Squalidae family of sharks and are among the most abundant species of sharks in the world. Spiny dogfish are gregarious fish that form large schools of hundreds to thousands of sharks, often composed entirely of the same size or sex. After 4-6 month of development, the membrane providing nourishment to the embryo breaks down. -. "The Greenpeace International seafood red list is a list of fish that are commonly sold in supermarkets around the world, and which have a very high risk of being sourced from unsustainable fisheries. The spiny dogfish shark is the most abundant shark. [3] While these common names may apply to several species, Squalus acanthias is distinguished by having two spines (one anterior to each dorsal fin) and lacks an anal fin. Genus Squalus. They consist of two families: the frill sharks (Chlamydoselachidae), represented by the single species The name "dogfish" was adapted by fishermen who referred to the schools of them chasing schools of smaller fish as "packs". This long, slender dogfish has a pointed snout, large eyes, and spines in front of its two dorsal fins. Firsthand observation of a spiny dogfish giving birth in the wild near Rockport, MA (August 2002). Distinctive Features Taxonomy Animalia Chordata Elasmobranchii Squaliformes Etmopteridae Centroscyllium fabricii Loading species photos... SPINY DOGFISH SHARK ATTACKS Dogfish are not considered to be dangerous, but some damage could be done by their teeth and their slightly poisonous dorsal fin spines. ›Squalus acanthias Linnaeus, 1758. CrossRef; Google Scholar Learn what else we are doing to keep you safe. For Mrs. Gadus' Comparative Anatomy I class. Sharks. The spiny dogfish Squalus acanthias is one of the most abundant shark species in the world. Its dorsal fin spines are associated with small venom glands and can cause painful wounds. Fisheries Research, Vol. Spiny dogfish sharks are long-distance travelers. The spiny dogfish Genus, Squalus. Fishes in the Fresh Waters of Florida Gallery, Check the status of the Spiny Dogfish at the IUCN website. The mode of reproduction in the roughskin dogfish is ovoviviparity meaning the embryos are nourished by a yolk-sac within the mother’s body until birth. You won’t find Spiny dogfish on most shark diver’s ‘bucket lists’. Eumetazoa: pictures (20647) Spiny dogfish swim in large schools with individuals of the same size class staying together as they grow. This species can cause tremendous damage when entangled in commercial nets. First dorsal spine origin is behind the pectoral rear tips. The dogfish uses these spines to defend itself, curling in a bow and striking at any threatening predator. Dermal denticles of the spiny dogfish are small and low with three cusps. If captured, the shark can arch its back to pierce its captor with spines near the dorsal fins that secrete a mild venom into its predator. The dogfish sharks have the second largest order among sharks, comprising about 119 species. Related. The central ridge is prominent and the lateral extensions are wing-like in appearance. There is a large library of reviewed shark books, a constantly updated shark taxonomy page, a monster list of shark links, and deeper in the site there are numerous articles and stories about shark encounters. Diet studies shown that spiny dogfish do not target specific prey. Grey to brown above usually with small white spots. These spots of conspicuous on immature fish, fading with growth until they disappear entirely from some individuals. Behaviour. They consist of two families: the frill sharks (Chlamydoselachidae), represented by the single species Mating takes place in the winter months with gestation lasting 22–24 months. These include Squalus fernandinusMolina 1782, Acanthias vulgaris Risso 1827, Acanthias americanus Storer 1846, Spinax mediterraneanus Gistel 1848, Squalus sucklii Girard 1855, Squalus suckleyi Girard 1855, Acanthias sucklii Girard 1855, Acanthias linneiMalm 1877, Acanthias lebruni Valliant 1888, Acanthias commun Navarette 1898, Squalus wakiyae Tanaka 1918, Squalus kirki Phillipps 1931, Squalus barbouri Howell-Rivero 1936, and Squalus acanthias africana Myagkov & Kondyurin 1986.The valid genus name Squalus is Latin for “a kind of sea-fish” while the species name acanthias translates as “a prickly thing”, describing the spines found on the dorsal fins of this dogfish. Their skin is grey to brown on top and becomes increasingly paler, or even white, on the belly with small white spots running down each side of the body. 168, p. 6. View all available Spiny Dogfish Pictures. Shark Cam. Other language common names include abou shoka (Arabic), abura-tsunozame (Japanese), abushoka (Arabic), agullat (Catalan), aiguillat commun (French), akula (Bulgarian), an fiogach gobach (Irish), cação-de-espinho (Portuguese), câine de mare (Rumanian), can bianco (Italian), doornhaai (Dutch), doringhai (Afrikaans), dornfisch (German), eqalussuaq kukilik (Greenlandic), galhudo (Portuguese), galludo (Spanish), grundhai (German), háfur (Icelandic), katran (Russian), kentroni (Greek), koinga (Maori), kolen (Polish), mazzola (Maltese), mielga (Spanish), morsko kuce (Bulgarian), pigghaj (Swedish), pinchudo (Spanish), qozan qetan (Hebrew), rechin (Rumanian), skyllos (Greek), spikkel-haai (Afrikaans), and spinarolo (Italian). Females don’t reach sexual maturity until 12 years of age, giving birth to approximately 6 pups after a 2-year gestation period. [20], National Oceanographic and Atmospheric Administration, Migratory Shark Memorandum of Understanding, 10.2305/IUCN.UK.2016-1.RLTS.T91209505A2898271.en, "Status of Fishery Resources off the Northeastern US: Spiny dogfish (Squalus acanthias)", "Dogfish — it's what's for dinner on the Cape", Greenpeace International Seafood Red list, Memorandum of Understanding on the Conservation of Migratory Sharks, "Mid-Atlantic Council Adopts Increase in Spiny Dogfish Quotas", NOAA Announces Recovery of Spiny Dogfish Stock, "Threat of Dogfish Sharks Unite Commercial and Recreational Fishermen From Maine to North Carolina", http://fossilworks.org/bridge.pl?a=taxonInfo&taxon_no=151823, 3D model of a spiny dogfish splanchnocranium, https://en.wikipedia.org/w/index.php?title=Spiny_dogfish&oldid=991517135, Articles with dead external links from June 2016, Articles with unsourced statements from June 2019, All articles with vague or ambiguous time, Wikipedia articles needing clarification from June 2019, Creative Commons Attribution-ShareAlike License. More on sharks . In this episode of Shark Academy, Jonathan introduces viewers to a small shark known as the Spiny Dogfish. 2, Fig. Mature females reach weights of 7.1-9.9 pounds (3.2-4.5 kg), with a maximum recorded weight of 21.6 pounds (9.8 kg). Primitive sharks (Hexanchoidei) have six or seven gill clefts on each side. There are over 350 species of sharks known worldwide. DOgfISH | P 97 figueiredo, I., T. Moura, A. Neves and L.S. Squalus acanthias Linnaeus, 1758. The Spiny Dogfish, or Dogfish Shark, is smaller than many other species of sharks. Spiny dogfish are found in the western Atlantic Ocean from Greenland to Argentina and in the eastern Atlantic from Iceland and Murmanski Coast (Russia) to South Africa including the Mediterranean Sea and Black Sea. This is followed by ovoviviparous development. Family: Squalidae Identification: Long, flattened, pointed snout. Class– Chondrichthyles. Often found in dense schools, it preys on fishes and various invertebrates. Kousteni, Vasiliki and Megalofonou, Persefoni 2015. Reproduction is also slow for this species, gestation takes nearly 2 years and females have about 9 pups on average. Primitive sharks (Hexanchoidei) have six or seven gill clefts on each side. Federal and state recovery plans are currently in place but continually challenged. Fish oil is extracted from the shark’s liver, the meat is used for food, and the skeleton is used to make fish glue. This page was last edited on 30 November 2020, at 13:48. The Linked Data Service provides access to commonly found standards and vocabularies promulgated by the Library of Congress. Classification/ Diagnostic Characteristics The Dogfish shark in of the phylum Chordata meaning it has a notochord. However, many synonyms referring to this species have been used in past scientific literature. Taxonomy ID: 7797 (for references in articles please use NCBI:txid7797) current name. Froese, Rainer and Pauly, Daniel, eds. Taxonomy. No anal fin. The Squalidae, or common English name Dogfish sharks are a family of sharks in the order Squaliformes. The second dorsal fin is about two-thirds the size of the first and is located behind the pelvic fins. cl. Other consumed species include wolffish and flatfishes, as well as squid, jellyfish, shrimps, crabs, octopus, and sea cucumbers. This species is thought to have the longest gestation period of any vertebrate (up to 24 months). The spiny dogfish, spurdog, mud shark, or piked dogfish [2] (Squalus acanthias) is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. Spiny dogfish are found epibenthically, however they do move through the water column, up to surface water. The spiny dogfish is one of the most abundant species of shark in the world is also commonly known as the piked dogfish, the codshark and the thorndog. 3). The spiny dogfish was originally described as Squalus acanthias by Karl Linneaus in 1758. These dogfish are found in inshore and offshore waters over the continental shelf to depths of 2950 feet (900 m). The spiny dogfish may go by many names, including piked dogfish, rock salmon and spiky dog, but only one truly represents this shark’s unique defense strategy. Reproductive strategy of leafscale gulper shark Centrophorus squamosus and the Portuguese dogfish Centroscymnus coelolepis on the Portuguese continental slope. This species is extremely vulnerable to over fishing and are currently on the brink of collapse. Those caught in the USSR include the spiny dogfish, the Greenland shark, and the porbeagle. Masks are required at all times. Like other elasmobranches, dogfish are slow to mature, long-lived and have low reproduction rates, making them very vulnerable to over-exploitation. There are 28 upper teeth and 22-24 lower teeth in the jaws of the spiny dogfish. [clarification needed] The proposed quota for 2011 was 16.1 million kilograms (35.5 million lb) with a trip limit of 1,800 kg (4,000 lb), an increase over past years in which the quota has ranged from 2 to 9 million kilograms (5 to 20 million lb), with trip limits from 900 to 1,400 kg (2,000 to 3,000 lb). Total landings of spiny dogfish peaked in 1974 at 27,400 metric tonnes, followed by a sharp decline, stabilizing at 5,900 mt during the 1980s. Dogfish have earned a bad reputation among fishermen for their voracious appetites. It was also set well above the actual weight of fish being caught until 2005, rendering it meaningless. Found primarily north of Cape Cod in the summer, they move south to Long Island in the fall and as far south as North Carolina in the winter. More is known about it than any other species of shark; it is often studied in scientific laboratories. This drastic increase led to the creation and implementation of many fishery management policies placing restrictions on the fishing of spiny dogfish. In the UK, like other species of shark, spiny dogfish was commonly sold in fish and chip shops as ‘rock salmon’. Sluggish in nature, the bramble shark feeds on smaller sharks (including the spiny dogfish, Squalus acanthias), bony fishes (including ling, catfishes, and lizardfishes), and crabs. Dorsal fins both preceded by a single spine, 2. The IUCN is a global union of states, governmental agencies, and non-governmental organizations in a partnership that assesses the conservation status of species. It’s vital to know what species are and how they’re related, so we can understand their role within the ecosystem. Rank i. Litter sizes average 6-7 but varies between 1 and 15. Datasets available include LCSH, BIBFRAME, LC Name Authorities, LC Classification, MARC codes, PREMIS vocabularies, ISO language codes, and more. Taxonomy The spiny dogfish sharks are slim, have moderately large eye, somewhat flattened top head and a narrow pointed snout … > Check the status of the Spiny Dogfish at the IUCN website. Lineage i. The American … Until the 16th century, sharks were known to mariners as "sea dogs". Spiny dogfish is sold in New Zealand and is exported, mainly to South Korea (40%), Russia and UK with a value of $910,00 in 2015, down from $2.5 million in 2009. Datasets available include LCSH, BIBFRAME, LC Name Authorities, LC Classification, MARC codes, PREMIS vocabularies, ISO language codes, and more. 2012 [nom. They are aggressive hunters and have a sizable diet that can range from squid, fish, crab, jellyfish, sea cucumber, shrimp and other invertebrates.[6]. Recreational fishing accounts for an insignificant portion of the spiny dogfish harvest. Squalus acanthias Grayfish (Also: Pacific dogfish; Spiny Dogfish) Kingdom Animalia animals. Spiny Dogfish). The young are born head-first with cartilaginous sheaths on the spines to protect the mother from injury. Elasmodiver is now so difficult to check for updates, that new information and pictures are listed on an Elasmodiver Updates Page that can be accessed here: WHAT'S NEW? Those caught in the USSR include the spiny dogfish, the Greenland shark, and the porbeagle. This species is used in the popular British dish “fish and chips” as well as marketed for its oil and as fish meal. There is no anal fin on the spiny dogfish. The sizes of the new pup range between 8 to 13 inches in length. The spiny dogfish shark (Squalus acanthias) is the most common shark and Estimates of the dogfish's life span range from 30-100 years. Dogfish Sharks — 119 species shallows to the chill blackness of the abyss, and their taxonomy is a veritable morass of contention and tentative revision. [1] In EU waters, a Total Allowable Catch (TAC) has been in place since 1999, but until 2007 it only applied to ICES Areas IIa and IV. Twitter. They are relatives of the pygmy shark, and sleeper shark. The species name acanthias refers to the shark's two spines. Reported catches in 2000–2009 varied between 13,800 tonnes (in 2008) and 31,700 tonnes (in 2000). Spiny dogfish are bottom-dwellers. Denticles Its dorsal fin has spines that are mildly poisonous. These form a nearly continuous cutting edge from one corner of the mouth to the other. The spiny dogfish shark (Squalus acanthias) is one of the most commonly used cartilaginous fishes in biological research, especially in the fields of nitrogen metabolism, ion transporters and osmoregulation. In fact, the only time that your average diver will come into contact with a dogfish is when it is covered in batter, served with chips and bathed in an artery-constricting amount of salt and vinegar. The eyes of this dogfish are moderately large. The Linked Data Service provides access to commonly found standards and vocabularies promulgated by the Library of Congress. Males are identified by a pair of pelvic fins modified as sperm-transfer organs, or "claspers". This was in response to heavy fishing that devastated dogfish populations during the 1990s. [4], The spiny dogfish has dorsal fins, no anal fin, and white spots along its back. This small shark is also known as the piked dogfish, skittledog, spotted dogfish, white-spotted dogfish, codshark, and thorndog. The spiny dogfish is gray, with white spots, and is about 60 to 120 cm (2 to 4 feet) long. Fish oil is extracted from the shark’s liver, the meat is used for food, and the skeleton is used to make fish glue. The dogfish fishery increased dramatically in the U.S. during the 1990s, resulting in a 75% reduction in mature females, leading to record low numbers of pups over the past seven years. Its dorsal fin spines are associated with small venom glands and can cause painful wounds. The meat is primarily consumed in England, France, the Benelux countries and Germany. Spiny Dogfish are a species of smaller sharks that are found off the coast of every continent except Antarctica. Litters range between two and eleven, but average six or seven. Because of its availability, cartilaginous skull, and manageable size, it is a popular vertebrate dissection specimen in both high schools and universities. Spiny Dogfish Atlantic population. As a cartilaginous fish, shark tissues usually do not fossilize. [9], Spiny dogfish are consumed as human food in Europe, the United States, Canada, New Zealand and Chile. Watch the live cam. The Spiny dogfish shark can be found at temperatures between 0 and 15 °C from 10 to 200 meters below. Dogfish Shark Diet: The dogfish sharks are the carnivorous animal and this is the reason that their diet contains purely meat-based diet. A male’s body has a maximum length of 39 inches, and a female’s body has a maximum length of 49 inches. While these common names may apply to several species, Squalus acanthias is distinguished by having two spines and lacks an anal fin. Google+. [10], Bottom trawlers and sink gillnets are the primary equipment used to harvest spiny dogfish. During the spring, they begin their migration north, reaching Georges Bank in March and April. Scientific Name: Squalus acanthias Taxonomy Group: Fishes COSEWIC Range: Atlantic Ocean COSEWIC Assessment Date and Status Change: April 2010 COSEWIC Status: Special Concern COSEWIC Status Criteria: COSEWIC Reason for Designation: This small shark is widely distributed in temperate regions of the world’s oceans and appears to be a habitat generalist. This species is closely related to Squalus acanthias and for many years they were treated as a single species. The edges of the first and second dorsal fins and the caudal fin appear dusky at birth but quickly fade. The pelvic fins are closer to the second dorsal fin than the first dorsal. The spiny dogfish is considered as “Vulnerable” by the World Conservation Union (IUCN) due to intense fishing pressure. Scientific Name: Squalus acanthias Taxonomy Group: Fishes COSEWIC Range: Atlantic Ocean COSEWIC Assessment Date and Status Change: April 2010 COSEWIC Status: Special Concern COSEWIC Status Criteria: COSEWIC Reason for Designation: This small shark is widely distributed in temperate regions of the world’s oceans and appears to be a habitat generalist. They have two dorsal fins, each with smooth, un-grooved spines, but no anal fin. The male inserts one clasper into the female oviduct orifice and injects sperm along a groove on the clasper's dorsal section. We report an envenoming, which occurred in Ubatuba (North Coast of São Paulo State, Brazil). There is no notch on the upper caudal lobe and the lower caudal lobe is not well-developed. They rarely grow longer than 39 inches except in the cases of older females which have been caught up to 49 inches long. [15], In recent years, however, the US has implemented fishing controls and opened up the fishery. [18], In June 2018, the New Zealand Department of Conservation classified Squalus acanthias Linnaeus as "Not Threatened" with the qualifier "Secure Overseas" under the New Zealand Threat Classification System.[19]. The spiny dogfish has a slender, elongate body and a moderately flattened head. Recent research, using meristic, morphological and molecular data led to the resurrection of Pacific Spiny Dogfish as a separate species. Their bodies are dark gray above and white below, often with white spotting on the sides. cl. The average sizes of the litter range from 6 to 7 inches, however, it can vary between one and 15. It remains to be seen if populations will be able to recover.[13]. Other names i. Shark Taxonomy. These ocean predators are as interesting as they are elegant. Dogfish Shark Lab Classifications. Taxonomy and Nomenclature Kingdom: Animalia : Taxonomic Rank: Species : Synonym(s): Squalus fernandinus Molina, 1782 : Koinga kirki Phillipps, 1931 : Squalus tasmaniensis Howell Rivero, 1936 : Common Name(s): cazón espinoso común [Spanish] piked dogfish [English] spiny dogfish [English] galludo espinoso [Spanish] aiguillat commun [French] dogfish [English] grayfish [English] … Facebook. Males mature at around 11 years of age, growing to 80–100 cm (31–39 in) in length; females mature in 18–21 years and are slightly larger than males, reaching 98.5–159 cm (38.8–62.6 in). Morphology. Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Biota "neomura" Domain Eukaryota Chatton, 1925 - eukaryotes neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes neozoa Cavalier-Smith 1993 scotokaryotes Cavalier-Smith 2000 podiates Cavalier-Smith 2012 [nom. Etymology. Binomial Name: Squalus acanthias. Pinterest. Males can grow up to 3 feet while the females can grow up to 5 feet. The snout is narrow, tapering to a pointed tip. Schools can consist of either mature large females, medium size mature males or immature females, or of small immature fishes of both sexes. Nonetheless, transcriptomic data for this organism is scarce. Up until the 1600’s animals and plants were referred to by their common names. There are low lateral keels located on the caudal peduncle. Fertilization is internal. Food Habits Despite these alarming figures, very few management or conservation measures are in place for Squalus acanthias. The first dorsal fin is located about halfway between the pectoral and pelvic fin origins and behind the rear tips of the pectoral fins. The spiny dogfish is a highly migratory species–one individual tagged in Washington made a … They are commonly found at depths of around 50–149 m (160–490 ft), but have been found deeper than 700 m (2,300 ft). Live cam. Spiny dogfish in the northern Pacific Ocean have recently been reevaluated and found to constitute a separate species, now known as "Pacific spiny dogfish", Squalus suckleyi. The schools have north-south coastal and on-shore off-shore movements that are not completely understood. "[14] In the same year, the Convention on Migratory Species (CMS; also known as the Bonn Convention) listed the species (Northern Hemisphere populations) under Annex I of its Migratory Shark Memorandum of Understanding. It's integral to wildlife conservation, providing the bedrock for our understanding of sharks. The TAC for 2011 was set at 0 tons, ending targeted fishing for the species in EU waters. Amino acid composition has a great influence on conformation and stability. There is a lateral row of small white spots along each side from above the pectoral fins to above the pelvic fins. Order– Squaliformes. Predators Larger sharks are potential predators of the roughskin dogfish. Dogfish are a highly migratory species. In 2001, the Atlantic States Marine Fisheries Commission (ASMFC) voted to extend an emergency action that closes state waters to fishing for the vulnerable spiny dogfish. This program is the most extensive tagging study conducted for a shark species. They consist of two families: the frill sharks (Chlamydoselachidae), represented by the single species Spiny dogfish, Piked dogfish French: Aiguillat commun Spanish: Mielga Appearance: Small shark with two dorsal fins with ungrooved large spines. The spiny dogfish, Squalus acanthias,is a coastal squalid shark with a circumboreal distribution (Bigelow and Schroeder, 1953) including the Mediterranean and Black seas (Aksiray, 1987; Compagno, 1989; Avflar, 2001; Düzgünefl et al., 2005). Although they can tolerate brackish water, spiny dogfish prefer full-strength seawater and do not enter freshwater habitats. Spiny dogfish are been documented in the stomachs of cod, red hake, and goosefish, as well as other spiny dogfish. It is found mostly in shallow waters and further offshore in most parts of the world, especially in … While they are one of the most abundant sharks in the ocean, they do not attract the same mesmerizing attention as their charismatic relatives. Includes Plane descriptions and Directions given in the… They belong to the Squalidae family. Piked Dogfish or Spiny Dogfish Future and Conservation: Piked dogfish or Spiny dogfish are consumed as human food in Europe, the United States, Canada, New Zealand and Chile. They have a long gestation period, produce small litters of pups, and are slow growing. One spiny dogfish tagged and released from Washington State showed up off the coast of Japan — a 5,000-mile (8,047 km) journey. Squalis acanthias. Common Names: Spiny dogfish, Common spiny dogfish, Piked dogfish, Mud shark. Reproduction The meat is primarily consumed in England, France, Italy, the Benelux countries, and Germany. Reproduction is aplacental viviparous, which was once called ovoviviparity. Click here to view more detailed search options such as taxonomy, location, habitat, Discover English, –, Spiny Dogfish, Cape Shark, Spurdog, Piked Dogfish. The Spiny Dogfish, also known as the Spurdog, Mud Shark, or Piked Dogfish, are the most common sharks of the world. Latin name Squalus acanthias Maximum size in cm 160 Colour Slate, few white spots, paler below Found where All levels Other names Spurdog, Mud Shark, Piked Dogfish, Skittledog, White-spotted dogfish, Codshark, Thorndog Status (IUCN) Vulnerable They are absent along the coast of Canada and Maine until late June and July. The spiny dogfish is gray, with white spots, and is about 60 to 120 cm (2 to 4 feet) long. Common Name– Dogfish Sharks. Like almost all other sharks, the Spiny Dogfish live in the ocean, a salt water environment. The all-tackle game fish record is 15.7 pounds (7.14 kg) caught off the coast of Ireland, 1989. The pelvic fins are smaller than the pectoral fins. This includes data values and the controlled vocabularies that house them. Commercial fishermen target the mature females because they grow to larger sizes than males. There are sharp dorsal fin spines at the anterior margins of the dorsal fins with the first about half as long and the second nearly as long as the anterior margins of their respective fins. English language common names include spiny dogfish, blue dog, common spinyfish, darwen salmon, dogfish, grayfish, Pacific dogfish, piked dogfish, rock salmon, spiky dog, spotted spiny dogfish, spring dogfish, spur dogfish, spur dog, victorian spotted dogfish, white-spotted dogfish, and white-spotted spurdog. Spiny dogfish website (Florida Museum of Natural History) Distribution of spiny dogfish First dorsal fin skeleton of the Spiny Dogfish is a highly modified dermal denticle supported by series of sturdy cartilages. They live up to 25-30 years of age. With a slender body and pointed snout, the spiny dogfish is a compact shark species reaching a maximum of 39 inches in males and 49 inches in females. Those caught in the USSR include the spiny dogfish, the Greenland shark, and the porbeagle. The National Marine Fisheries Service currently regulates shark fisheries, including the spiny dogfish, in federal waters; setting forth closures when quotas are reached for each shark species group (large coastal sharks, small coastal sharks, and pelagic sharks).

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