Squalidae

Family of sharks in the order Squaliformes

Dogfish sharks
Temporal range: Upper Cretaceous–Recent
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Spiny dogfish, Squalus acanthias
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Squaliformes
Family: Squalidae
Bonaparte, 1834
Genera

Squalidae, more commonly known as dogfish, dog sharks, or spiny dogfish,[2] are one of several families of sharks categorized under Squaliformes, making it the second largest order of sharks, numbering 119 species across 7 families.[3] Having earned their name after a group of fishermen reportedly observed the species chasing down smaller fish in dog-like packs,[4] dogfish have slender, streamlined bodies, usually more compact in comparison to other species, and a pointed snout. Dogfish likewise have two dorsal fins, each with smooth spines, but no anal fin, and their skin is generally rough to the touch.[1] As the species reaches adulthood, males usually measure a maximum of 100 cm (39 inches), while females typically measure 125 cm (49 inches) long. The species therefore exhibits female-dominant sexual dimorphism.

Dogfish sharks have slate-grey or grey-brown skin with white dots that becomes paler (almost white) around the belly region. These sharks are characterized by teeth in upper and lower jaws similar in size; a caudal peduncle with lateral keels; the upper precaudal pit usually is present; and the caudal fin is without a subterminal notch.

They are carnivorous, principally preying upon organisms smaller than themselves. Some of their prey include herring, mackerel, and capelin. In special cases, they may consume jellyfish and squid. Even at a young age, spiny dogfish pups may hunt fish two or three times their size.[citation needed] Unlike virtually all other shark species, dogfish sharks possess venom which coats their dorsal spines; this venom is mildly toxic to humans and would be harmful if the shark were to be mishandled. The livers and stomachs of the Squalidae contain the compound squalamine, which possesses the property of reduction of small blood vessel growth in humans.[5] Dogfish sharks use their strong jaw and sharp teeth to consume their prey.

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. In addition to its long distance migration, the spiny shark holds the record for longest gestation period of any other vertebrate at 22–24 months. Females produce eggs and give birth to live young that measure to be 20–33 cm (8–13 inches).

Taxonomy

Dogfish are scientifically classified as the Squalidae family, categorized under the Squaliform order, which encompasses seven families in total, including Squalidae. The Squalidae family itself contains two separate genera: Cirrhigaleus and Squalus, numbering 37 species between the two.

Squalidae Classification
Order: Squaliformes

Family: Within Squaliforme order, there are seven families

Genus: Within the Squalidae dogshark family, are two known genera

  • Squalus: The Squalus genus encompasses 34 different species of dogfish, or spurdogs, home to waters all around the world. With the exception of one – Squalus margaretsmithae, or Smith's dogfish shark, known to be a maximum of 55 cm (21.3 inches) in length [6] – species classified under the genus are known to range from 56 to 160 cm (22 to 63 inches) in length.[7] While the majority of the species are characterized by their slate or blue-grey body coloration and white underbelly, only 2 – Squalus acanthias and Squalus suckleyi – are more easily recognizable by the notable, evenly-spaced array of small white dots decorating their darker dorsal sides.[8]
  • Cirrhigaleus: In contrast to its counterpart genus, Cirrhigaleus currently includes only 3 species, the most recent of which, Cirrhigaleus australis, was discovered and classified in 2007.[9] Cirrhigaleus species are typically the larger of the two Squalidae genera, ranging from 120 to 125 cm (47 to 49.5 inches) in length (although the largest species of 160 cm (63 inches), Squalus acanthias, is classified under the Squalus genus, the vast majority of the species within the same genus remain under or around 100 cm (39 inches) in length, whereas only 3 of 34 total species exceed 120 cm (47 inches).[10] The genus likewise shares many phenotypic similarities with its Squalus counterpart, namely the blue-grey body coloration, white underbelly, and basic morphology, however with some variation; common body coloration may also be a grey-brown hue, and most notably, Cirrhigaleus differs from Squalus in having extremely long nasal barbels, and small black instead of white spots in a similar pattern.[11]
for a full list of species in each genera: list of sharks
Squalus acanthias, or the spiny dogfish (adult), with grey-brown body coloration, decorated by evenly-spaced, small, white dots, and lighter underbelly.
Cirrhigaleus barbifer, or the Mandarin dogfish (adult), pictured with grey-brown body coloration, decorated in an array of speckled black dots, with a lighter underbelly, and elongated nasal barbels.

References

  • iconSharks portal
  1. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2009). "Squalidae" in FishBase. January 2009 version.
  2. ^ "Squalidae". Integrated Taxonomic Information System. Retrieved 16 November 2013.
  3. ^ Straube, N.; Li, C.; Claes, J.M. (2015). "Molecular phylogeny of Squaliformes and first occurrence of bioluminescence in sharks". BMC Evolutionary Biology. 15 (162). doi:10.1186/s12862-015-0446-6. PMC 4537554.
  4. ^ "Spiny Dogfish". Oceana. Retrieved 2019-04-12.
  5. ^ "From the Belly of a Shark, a Cancer Cure?". National Geographic. Vol. 193, no. 6. June 1998. p. 202. Retrieved 2 January 2023.
  6. ^ de F. L. Viana, S. T.; Lisher, M. W.; de Carvalho, M. R. (2018). "Two new species of short-snouted dogfish sharks of the genus Squalus Linnaeus, 1758, from southern Africa (Chondrichthyes: Squaliformes: Squalidae)". Marine Biodiversity. 48: 1787–1814. doi:10.1007/s12526-017-0673-8.
  7. ^ Froese, R.; Pauly, D. "Genus: Squalus". fishbase.org. FishBase.
  8. ^ Ebert, D. A. (2010). "Resurrection and redescription of Squalus suckleyi (Girard, 1854) from the North Pacific, with comments on the Squalus acanthias subgroup (Squaliformes: Squalidae)". Zootaxa. 2612 (1): 22–40.
  9. ^ White, W. T.; Last, P. R.; Stevens., J. D. (2007). "Cirrhigaleus australis n. sp., a new Mandarin dogfish (Squaliformes: Squalidae) from the south-west Pacific". Zootaxa. 1560 (1): 19–30. doi:10.11646/ZOOTAXA.1560.1.2.
  10. ^ Froese, R.; Pauly, D. "Genus: Cirrhigaleus". fishbase.org. FishBase.
  11. ^ Tanaka, Shigeho (1917). "Three new species from Japan". Zoology. 29: 225–226.

Further reading

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Extant shark species
Order Carcharhiniformes (Ground sharks)
Hemigaleidae
(Weasel sharks)
Hemipristis
  • Snaggletooth shark (H. elongata)
Chaenogaleus
  • Hooktooth shark (C. macrostoma)
Hemigaleus
  • Australian weasel shark (H. australiensis)
  • Sicklefin weasel shark (H. microstoma)
Paragaleus
  • Whitetip weasel shark (P. leucolomatus)
  • Atlantic weasel shark (P. pectoralis)
  • Slender weasel shark (P. randalli)
  • Straight-tooth weasel shark (P. tengi)
Leptochariidae
Leptocharias
  • Barbeled houndshark (L. smithii)
Proscylliidae
(Finback sharks)
Ctenacis
  • Harlequin catshark (C. fehlmanni)
Eridacnis
  • Cuban ribbontail catshark (E. barbouri)
  • Pygmy ribbontail catshark (E. radcliffei)
  • African ribbontail catshark (E. sinuans)
Proscyllium
  • Graceful catshark (P. habereri)
  • P. venustum
Pseudotriakidae
Gollum
  • Slender smooth-hound (G. attenuatus)
Pseudotriakis
  • False catshark (P. microdon)
Sphyrnidae
(Hammerhead sharks)
Eusphyra
  • Winghead shark (E. blochii)
Sphyrna
  • Scalloped bonnethead (S. corona)
  • Whitefin hammerhead (S. couardi)
  • Scalloped hammerhead (S. lewini)
  • Scoophead (S. media)
  • Great hammerhead (S. mokarran)
  • Bonnethead (S. tiburo)
  • Smalleye hammerhead (S. tudes)
  • Smooth hammerhead (S. zygaena)
Triakidae
(Houndsharks)
Furgaleus
  • Whiskery shark (F. macki)
Galeorhinus
  • School shark (G. galeus)
Gogolia
  • Sailback houndshark (G. filewoodi)
Hemitriakis
  • Deepwater sicklefin hound shark (H. abdita)
  • Sicklefin hound shark (H. falcata)
  • Japanese topeshark (H. japanica)
  • Whitefin topeshark (H. leucoperiptera)
  • Ocellate topeshark (Hemitriakis Sp.A)
Hypogaleus
  • Blacktip tope (H. hyugaensis)
Iago
  • Longnose houndshark (I. garricki)
  • Bigeye houndshark (I. omanensis)
  • Lowfin houndshark (Iago Sp.A)
Mustelus
(Smooth-hounds)
  • M. albipinnis
  • Gummy shark (M. antarcticus)
  • Starry smooth-hound (M. asterias)
  • Gray smooth-hound (M. californicus)
  • Dusky smooth-hound (M. canis)
  • Sharptooth smooth-hound (M. dorsalis)
  • Striped smooth-hound (M. fasciatus)
  • Spotless smooth-hound (M. griseus)
  • Brown smooth-hound (M. henlei)
  • Smalleye smooth-hound (M. higmani)
  • Spotted estuary smooth-hound (M. lenticulatus)
  • Sicklefin smooth-hound (M. lunulatus)
  • Starspotted smooth-hound (M. manazo)
  • Speckled smooth-hound (M. mento)
  • M. minicanis
  • Arabian smooth-hound (M. mosis)
  • Common smooth-hound (M. mustelus)
  • Narrowfin smooth-hound (M. norrisi)
  • Whitespotted smooth-hound (M. palumbes)
  • Blackspotted smooth-hound (M. punctulatus)
  • M. ravidus
  • Narrownose smooth-hound (M. schmitti)
  • Gulf smoothhound (M. sinusmexicanus)
  • Humpback smooth-hound (M. whitneyi)
  • M. widodoi
Scylliogaleus
  • Flapnose houndshark (S. quecketti)
Triakis
  • Sharpfin houndshark (T. acutipinna)
  • Spotted houndshark (T. maculata)
  • Sharptooth houndshark (T. megalopterus)
  • Banded houndshark (T. scyllium)
  • Leopard shark (T. semifasciata)
Carcharhinidae
  • Large family listed below
Scyliorhinidae
  • Large family listed below
Family Carcharhinidae (Requiem sharks)
Carcharhinus
  • Blacknose shark (C. acronotus)
  • Silvertip shark (C. albimarginatus)
  • Bignose shark (C. altimus)
  • Graceful shark (C. amblyrhynchoides)
  • Grey reef shark (C. amblyrhynchos)
  • Pigeye shark (C. amboinensis)
  • Borneo shark (C. borneensis)
  • Copper shark (C. brachyurus)
  • Spinner shark (C. brevipinna)
  • Nervous shark (C. cautus)
  • Whitecheek shark (C. dussumieri)
  • Silky shark (C. falciformis)
  • Creek whaler (C. fitzroyensis)
  • Galapagos shark (C. galapagenisis)
  • Pondicherry shark (C. hemiodon)
  • Finetooth shark (C. isodon)
  • Smoothtooth blacktip shark (C. leiodon)
  • Bull shark (C. leucas)
  • Blacktip shark (C. limbatus)
  • Oceanic whitetip shark (C. longimanus)
  • Hardnose shark (C. macloti)
  • Blacktip reef shark (C. melanopterus)
  • Dusky shark (C. obscurus)
  • Caribbean reef shark (C. perezii)
  • Sandbar shark (C. plumbeus)
  • Smalltail shark (C. porosus)
  • Blackspot shark (C. sealei)
  • Night shark (C. signatus)
  • Spottail shark (C. sorrah)
  • Australian blacktip shark (C. tilstoni)
Galeocerdo
  • Tiger shark (G. cuvier)
Glyphis
(River sharks)
  • Ganges shark (G. gangeticus)
  • Northern river shark (G. garricki)
  • Speartooth shark (G. glyphis)
  • Irrawaddy river shark (G. siamensis)
  • Borneo river shark (Glyphis sp. B)
Isogomphodon
  • Daggernose shark (I. oxyrhynchus)
Lamiopsis
  • Broadfin shark (L. temminckii)
Loxodon
  • Sliteye shark (L. macrorhinus)
Nasolamia
  • Whitenose shark (N. velox)
Negaprion
  • Sicklefin lemon shark (N. acutidens)
  • Lemon shark (N. brevirostris)
Prionace
  • Blue shark (P. glauca)
Rhizoprionodon
  • Milk shark (R. acutus)
  • Brazilian sharpnose shark (R. lalandii)
  • Pacific sharpnose shark (R. longurio)
  • Grey sharpnose shark (R. oligolinx)
  • Caribbean sharpnose shark (R. porosus)
  • Australian sharpnose shark (R. taylori)
  • Atlantic sharpnose shark (R. terraenovae)
Scoliodon
  • Spadenose shark (S. laticaudus)
Triaenodon
  • Whitetip reef shark (T. obesus)
Family Scyliorhinidae (Catsharks)
Apristurus
  • Flatnose cat shark (A. acanutus)
  • A. albisoma
  • A. aphyodes
  • Atlantic ghost catshark (A. atlanticus)
  • Brown catshark (A. brunneus)
  • Hoary catshark (A. canutus)
  • Flaccid catshark (A. exsanguis)
  • A. fedorovi
  • Humpback cat shark (A. gibbosus)
  • Longfin catshark (A. herklotsi)
  • Smallbelly catshark (A. indicus)
  • A. internatus
  • Broadnose catshark (A. investigatoris)
  • Japanese catshark (A. japonicus)
  • Longnose catshark (A. kampae)
  • Iceland catshark (A. laurussonii)
  • Longhead catshark (A. longicephalus)
  • Flathead catshark (A. macrorhynchus)
  • Broadmouth cat shark (A. macrostomus)
  • Ghost catshark (A. manis)
  • Black roughscale catshark (A. melanoasper)
  • Smalleye catshark (A. microps)
  • Smalldorsal cat shark (A. micropterygeus)
  • Largenose catshark (A. nasutus)
  • Smallfin catshark (A. parvipinnis)
  • A. pinguis
  • Spatulasnout catshark (A. platyrhynchus)
  • Deepwater catshark (A. profundorum)
  • Broadgill catshark (A. riveri)
  • Saldanha catshark (A. saldanha)
  • Pale catshark (A. sibogae)
  • South China catshark (A. sinensis)
  • Spongehead catshark (A. spongiceps)
  • Panama ghost catshark (A. stenseni)
Asymbolus
  • Australian spotted catshark (A. analis)
  • A. funebris
  • Western spotted catshark (A. occiduus)
  • Pale spotted catshark (A. pallidus)
  • A. parvus
  • A. rubiginosus
  • Variegated catshark (A. submaculatus)
  • Gulf catshark (A. vincenti)
Atelomycterus
  • A. baliensis
  • Banded sand catshark (A. fasciatus)
  • Australian marbled catshark (A. macleayi)
  • Coral catshark (A. marmoratus)
Aulohalaelurus
  • New Caledonia catshark (A. kanakorum)
  • Australian blackspotted catshark (A. labiosus)
Cephaloscyllium
  • Whitefin swellshark (C. albipinnum)
  • Circle-blotch pygmy swellshark (C. circulopullum)
  • Cook's swellshark (C. cooki)
  • Reticulated swellshark (C. fasciatum)
  • Formosa swellshark (C. formosanum)
  • Australian reticulate swellshark (C. hicosellum)
  • Draughtsboard shark (C. isabellum)
  • Australian swellshark (C. laticeps)
  • Spotted swellshark (C. maculatum)
  • Leopard-spotted swellshark (C. pardelotum)
  • Painted swellshark (C. pictum)
  • Sarawak pygmy swellshark (C. sarawakensis)
  • Flagtail swellshark (C. signourum)
  • Indian swellshark (C. silasi)
  • Speckled swellshark (C. speccum)
  • Balloon shark (C. sufflans)
  • Blotchy swellshark (C. umbratile)
  • Saddled swellshark (C. variegatum)
  • Swellshark (C. ventriosum)
  • Narrowbar swellshark (C. zebrum)
Cephalurus
  • Lollipop catshark (C. cephalus)
Figaro
  • Australian sawtail catshark (F. boardmani)
  • Northern sawtail catshark (F. striatus)
Galeus
  • Antilles catshark (G. antillensis)
  • Roughtail catshark (G. arae)
  • Atlantic sawtail cat shark (G. atlanticus)
  • Longfin sawtail cat shark (G. cadenati)
  • Gecko catshark (G. eastmani)
  • Slender sawtail catshark (G. gracilis)
  • Longnose sawtail cat shark (G. longirostris)
  • Blackmouth catshark (G. melastomus)
  • Southern sawtail catshark (G. mincaronei)
  • Mouse catshark (G. murinus)
  • Broadfin sawtail catshark (G. nipponensis)
  • Peppered catshark (G. piperatus)
  • African sawtail catshark (G. polli)
  • G. priapus
  • Blacktip sawtail catshark (G. sauteri)
  • Dwarf sawtail catshark (G. schultzi)
  • Springer's sawtail cat shark (G. springeri)
Halaelurus
  • Arabian catshark (H. alcockii)
  • Speckled catshark (H. boesemani)
  • Blackspotted catshark (H. buergeri)
  • Dusky catshark (H. canescens)
  • Broadhead cat shark (H. clevai)
  • New Zealand catshark (H. dawsoni)
  • Bristly catshark (H. hispidus)
  • Spotless catshark (H. immaculatus)
  • Lined catshark (H. lineatus)
  • Mud catshark (H. lutarius)
  • Tiger catshark (H. natalensis)
  • Quagga catshark (H. quagga)
Haploblepharus
  • Puffadder shyshark (H. edwardsii)
  • Brown shyshark (H. fuscus)
  • Natal shyshark (H. kistnasamyi)
  • Dark shyshark (H. pictus)
Holohalaelurus
  • H. favus
  • H. grennian
  • Crying izak (H. melanostigma)
  • African spotted catshark (H. punctatus)
  • Izak catshark (H. regani)
Parmaturus
  • White-tip catshark (P. albimarginatus)
  • White-clasper catshark (P. albipenis)
  • Beige catshark (P. bigus)
  • Campeche catshark (P. campechiensis)
  • Velvet catshark (P. lanatus)
  • McMillan's catshark (P. macmillani)
  • Blackgill catshark (P. melanobranchus)
  • Salamander shark (P. pilosus)
  • Filetail catshark (P. xaniurus)
  • Shorttail catshark (Parmaturus sp. A)
Pentanchus
  • Onefin catshark (P. profundicolus)
Poroderma
  • Pyjama catshark (P. africanum)
  • Leopard catshark (P. pantherinum)
Schroederichthys
  • Narrowmouthed catshark (S. bivius)
  • Redspotted catshark (S. chilensis)
  • Narrowtail catshark (S. maculatus)
  • Lizard catshark (S. saurisqualus)
  • Slender catshark (S. tenuis)
Scyliorhinus
  • Polkadot catshark (S. besnardi)
  • Boa catshark (S. boa)
  • Small-spotted catshark (S. canicula)
  • Yellowspotted catshark (S. capensis)
  • West African catshark (S. cervigoni)
  • Comoro cat shark (S. comoroensis)
  • Brownspotted catshark (S. garmani)
  • Freckled catshark (S. haeckelii)
  • Whitesaddled catshark (S. hesperius)
  • Blotched catshark (S. meadi)
  • Chain catshark (S. retifer)
  • Nursehound (S. stellaris)
  • Izu cat shark (S. tokubee)
  • Cloudy catshark (S. torazame)
  • Dwarf catshark (S. torrei)
Order Echinorhiniformes (Bramble sharks)
Echinorhinidae
Echinorhinus
  • Bramble shark (E. brucus)
  • Prickly shark (E. cookei)
Order Heterodontiformes (Bullhead sharks)
Heterodontidae
Heterodontus
  • Horn shark (H. francisci)
  • Crested bullhead shark (H. galeatus)
  • Japanese bullhead shark (H. japonicus)
  • Mexican hornshark (H. mexicanus)
  • Oman bullhead shark (H. omanensis)
  • Port Jackson shark (H. portusjacksoni)
  • Galapagos bullhead shark (H. quoyi)
  • Whitespotted bullhead shark (H. ramalheira)
  • Zebra bullhead shark (H. zebra)
Chlamydoselachidae
Chlamydoselachus
  • Frilled shark (C. anguineus)
  • Southern African frilled shark (C. africana)
Hexanchidae
(Cow sharks)
Heptranchias
  • Sharpnose sevengill shark (H. perlo)
Hexanchus
  • Bluntnose sixgill shark (H. griseus)
  • Bigeyed sixgill shark (H. nakamurai)
Notorynchus
  • Broadnose sevengill shark (N. cepedianus)
Order Lamniformes (Mackerel sharks)
Alopiidae
Alopias
(Thresher sharks)
  • Pelagic thresher (A. pelagicus)
  • Bigeye thresher (A. superciliosus)
  • Common thresher (A. vulpinus)
  • Alopias sp. (A. sp.)
Cetorhinidae
Cetorhinus
  • Basking shark (C. maximus)
Lamnidae
Carcharodon
  • Great white shark (C. carcharias)
Isurus
  • Shortfin mako shark (I. oxyrinchus)
  • Longfin mako shark (I. paucus)
Lamna
  • Salmon shark (L. ditropis)
  • Porbeagle (L. nasus)
Megachasmidae
Megachasma
  • Megamouth shark (M. pelagios)
Mitsukurinidae
Mitsukurina
  • Goblin shark (M. owstoni)
Odontaspididae
Carcharias
  • Grey nurse shark (C. taurus)
  • Indian sand tiger (C. tricuspidatus)
Odontaspis
  • Smalltooth sand tiger (O. ferox)
  • Bigeye sand tiger (O. noronhai)
Pseudocarchariidae
Pseudocarcharias
  • Crocodile shark (P. kamoharai)
Order Orectolobiformes (Carpet sharks)
Brachaeluridae
Brachaelurus
  • Blind shark (B. waddi)
Heteroscyllium
  • Bluegrey carpetshark (H. colcloughi)
Ginglymostomatidae
(Nurse sharks)
Ginglymostoma
  • Nurse shark (G. cirratum)
Nebrius
  • Tawny nurse shark (N. ferrugineus)
Pseudoginglymostoma
  • Short-tail nurse shark (P. brevicaudatum)
Hemiscylliidae
(Bamboo sharks)
Chiloscyllium
  • Arabian carpetshark (C. arabicum)
  • Burmese bamboo shark (C. burmensis)
  • Bluespotted bamboo shark (C. caerulopunctatum)
  • Grey bamboo shark (C. griseum)
  • Hasselt's bamboo shark (C. hasseltii)
  • Slender bamboo shark (C. indicum)
  • Whitespotted bamboo shark (C. plagiosum)
  • Brownbanded bamboo shark (C. punctatum)
Hemiscyllium
  • Indonesian speckled carpetshark (H. freycineti)
  • H. galei
  • Papuan epaulette shark (H. hallstromi)
  • H. henryi
  • Epaulette shark (H. ocellatum)
  • Hooded carpetshark (H. strahani)
  • Speckled carpetshark (H. trispeculare)
Orectolobidae
(Wobbegongs)
Eucrossorhinus
  • Tasselled wobbegong (E. dasypogon)
Orectolobus
  • Floral banded wobbegong (O. floridus)
  • Banded wobbegong (O. halei)
  • Western wobbegong (O. hutchinsi)
  • Japanese wobbegong (O. japonicus)
  • Spotted wobbegong (O. maculatus)
  • Ornate wobbegong (O. ornatus)
  • Dwarf spotted wobbegong (O. parvimaculatus)
  • Network wobbegong (O. reticulatus)
  • Northern wobbegong (O. wardi)
Sutorectus
  • Cobbler wobbegong (S. tentaculatus)
Parascylliidae
(Collared carpet sharks)
Cirrhoscyllium
  • Barbelthroat carpetshark (C. expolitum)
  • Taiwan saddled carpetshark (C. formosanum)
  • Saddle carpetshark (C. japonicum)
Parascyllium
  • Collared carpetshark (P. collare)
  • Rusty carpetshark (P. ferrugineum)
  • Ginger carpetshark (P. sparsimaculatum)
  • Necklace carpetshark (P. variolatum)
Rhincodontidae
Rhincodon
  • Whale shark (R. typus)
Stegostomatidae
Stegostoma
  • Zebra shark (S. fasciatum)
Order Pristiophoriformes (Sawsharks)
Pristiophoridae
Pliotrema
  • Sixgill sawshark (P. warreni)
Pristiophorus
  • Longnose sawshark (P. cirratus)
  • Tropical sawshark (P. delicatus)
  • Japanese sawshark (P. japonicus)
  • Shortnose sawshark (P. nudipinnis)
  • Bahamas sawshark (P. schroederi)
  • Eastern Australian sawshark (Pristiophorus peroniensis)
  • Philippine sawshark (Pristiophorus sp. C)
  • Dwarf sawshark (Pristiophorus sp. D)
Centrophoridae
(Gulper sharks)
Centrophorus
  • Needle dogfish (C. acus)
  • Dwarf gulper shark (C. atromarginatus)
  • Gulper shark (C. granulosus)
  • Dumb gulper shark (C. harrissoni)
  • Blackfin gulper shark (C. isodon)
  • Lowfin gulper shark (C. lusitanicus)
  • Smallfin gulper shark (C. moluccensis)
  • Taiwan gulper shark (C. niaukang)
  • Leafscale gulper shark (C. squamosus)
  • Mosaic gulper shark (C. tessellatus)
  • Little gulper shark (C. uyato)
Deania
  • Birdbeak dogfish (D. calcea)
  • Rough longnose dogfish (D. hystricosa)
  • Arrowhead dogfish (D. profundorum)
  • Longsnout dogfish (D. quadrispinosum)
Dalatiidae
Euprotomicroides
  • Taillight shark (E. zantedeschia)
Heteroscymnoides
  • Longnose pygmy shark (H. marleyi)
Mollisquama
  • Pocket shark (M. parini)
Dalatias
  • Kitefin shark (D. licha)
Isistius
  • Cookiecutter shark (I. brasiliensis)
  • South China cookiecutter shark (I. labialis)
  • Largetooth cookiecutter shark (I. plutodus)
Euprotomicrus
  • Pygmy shark (E. bispinatus)
Squaliolus
  • Smalleye pygmy shark (S. aliae)
  • Spined pygmy shark (S. laticaudus)
Etmopteridae
Aculeola
  • Hooktooth dogfish (A. nigra)
Centroscyllium
  • Highfin dogfish (C. excelsum)
  • Black dogfish (C. fabricii)
  • Granular dogfish (C. granulatum)
  • Bareskin dogfish (C. kamoharai)
  • Combtooth dogfish (C. nigrum)
  • Ornate dogfish (C. ornatum)
  • Whitefin dogfish (C. ritteri)
Etmopterus
(Lantern sharks)
  • New Zealand lanternshark (E. baxteri)
  • Blurred lanternshark (E. bigelowi)
  • Shorttail lanternshark (E. brachyurus)
  • Lined lanternshark (E. bullisi)
  • E. burgessi
  • Cylindrical lanternshark (E. carteri)
  • Tailspot lanternshark (E. caudistigmus)
  • Combtooth lanternshark (E. decacuspidatus)
  • Pink lanternshark (E. dianthus)
  • E. dislineatus
  • Blackmouth lanternshark (E. evansi)
  • Pygmy lanternshark (E. fusus)
  • Broadbanded lanternshark (E. gracilispinis)
  • Southern lanternshark (E. granulosus)
  • Caribbean lanternshark (E. hillianus)
  • Smalleye lantern shark (E. litvinovi)
  • Blackbelly lanternshark (E. lucifer)
  • Slendertail lanternshark (E. molleri)
  • Dwarf lanternshark (E. perryi)
  • African lanternshark (E. polli)
  • Great lanternshark (E. princeps)
  • False lanternshark (E. pseudosqualiolus)
  • Smooth lanternshark (E. pusillus)
  • Dense-scale lantern shark (E. pycnolepis)
  • West Indian lanternshark (E. robinsi)
  • Fringefin lanternshark (E. schultzi)
  • Thorny lanternshark (E. sentosus)
  • Velvet belly lantern shark (E. spinax)
  • Splendid lanternshark (E. splendidus)
  • Tasmanian lanternshark (E. tasmaniensis)
  • Brown lanternshark (E. unicolor)
  • Hawaiian lanternshark (E. villosus)
  • Green lanternshark (E. virens)
Miroscyllium
  • Rasptooth dogfish (M. sheikoi)
Trigonognathus
  • Viper dogfish (T. kabeyai)
Oxynotidae
(Rough sharks)
Oxynotus
  • Prickly dogfish (O. bruniensis)
  • Caribbean roughshark (O. caribbaeus)
  • Angular roughshark (O. centrina)
  • Japanese roughshark (O. japonicus)
  • Sailfin roughshark (O. paradoxus)
Somniosidae
(Sleeper sharks)
Centroscymnus
  • Portuguese dogfish (C. coelolepis)
  • Shortnose velvet dogfish (C. cryptacanthus)
  • Roughskin dogfish (C. owstoni)
Centroselachus
  • Longnose velvet dogfish (C. crepidater)
Proscymnodon
  • Largespine velvet dogfish (P. macracanthus)
  • Plunket shark (P. plunketi)
Scymnodalatias
  • Whitetail dogfish (S. albicauda)
  • Azores dogfish (S. garricki)
  • Sparsetooth dogfish (S. oligodon)
  • Sherwood dogfish (S. sherwoodi)
Scymnodon
  • Smallmouth velvet dogfish (S. obscurus)
  • Knifetooth dogfish (S. ringens)
Somniosus
  • Southern sleeper shark (S. antarcticus)
  • Frog shark (S. longus )
  • Greenland shark (S. microcephalus)
  • Pacific sleeper shark (S. pacificus)
  • Little sleeper shark (S. rostratus)
Zameus
  • Japanese velvet dogfish (Z. ichiharai)
  • Velvet dogfish (Z. squamulosus)
Squalidae
(Dogfish sharks)
Cirrhigaleus
  • Roughskin spurdog (C. asper)
  • Mandarin dogfish (C. barbifer)
Squalus
(Spurdogs)
  • Spiny dogfish (S. acanthias)
  • Eastern highfin spurdog (S. albifrons)
  • S. acutirostris
  • Western highfin spurdog (S. altipinnis)
  • Longnose spurdog (S. blainville)
  • Fatspine spurdog (S. crassispinus)
  • Cuban dogfish (S. cubensis)
  • Eastern longnose spurdog (S. grahami)
  • Japanese spurdog (S. japonicus)
  • Shortnose spurdog (S. megalops)
  • Blacktailed spurdog (S. melanurus)
  • Shortspine spurdog (S. mitsukurii)
  • Bartail spurdog (S. notocaudatus)
  • Western longnose spurdog (S. nasutus)
  • Cyrano spurdog (S. rancureli)
  • Pacific spiny dogfish (S. suckleyi)
Order Squatiniformes (Angel sharks)
Squatinidae
Squatina
  • Sawback angelshark (S. aculeata)
  • African angelshark (S. africana)
  • Eastern Australian angelshark (Squatina albipunctata)
  • Argentine angelshark (S. argentina)
  • Chilean angelshark (S. armata)
  • Australian angelshark (S. australis)
  • Pacific angelshark (S. californica)
  • Sand devil (S. dumeril)
  • Taiwan angelshark (S. formosa)
  • Angular angel shark (S. guggenheim)
  • S. heteroptera
  • Japanese angelshark (S. japonica)
  • Indonesian angelshark (S. legnota)
  • Cortez angelshark (S. mexicana)
  • Clouded angelshark (S. nebulosa)
  • Smoothback angelshark (S. oculata)
  • S. punctata
  • Western Australian angelshark (Squatina pseudocellata)
  • Angelshark (S. squatina)
  • Ornate angelshark (S. tergocellata)
  • Ocellated angelshark (S. tergocellatoides)
Taxon identifiers
Squalidae
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