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Chondrichthyes (Cartilaginous fishes)


Chondrichthyes (Huxley, 1880) is a group of jawed fish with paired fins and nostrils. They have scales and further are their hearts two-chambered. They differ significantly in having a skeleton made of cartilage rather than bone. The group is divided in the two subclasses: Elasmobranchii (sharks, rays and skates) and Holocephali (chimaeras, sometimes called ghost sharks).

There exists around 800 described species of chondrichthyes.

 

Species list:

amblyraja hyperboreaAmblyraja hyperborea
(Arctic skate)

Scientific name: Amblyraja hyperborea (Collett, 1879)
Popular names: Arctic skate, Blackbelly skate
Danish name: Arktisk rokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture sites: Davis and Denmark Strait

Depth: 140 - 2500 meter (bathydemersal)
Max. size: ~ 106 cm 

 

Description


 

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Amblyraja jenseniAmblyraja jenseni
(Shorttail skate)

Scientific name: Amblyraja jenseni (Bigelow & Schroeder, 1950)
Popular names: Shorttail skate, Jensen's skate
Danish name: Jensens rokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture sites: Davis Strait

Depth: 360 - 2200 meter (bathydemersal)
Max. size: ~ 85 cm 

Description


 

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amblyraja radiataAmblyraja radiata (Thorny skate)

Scientific name: Amblyraja radiata (Donovan, 1808)
Popular names: Thorny skate, Starry ray
Danish name: Tærpe

Family: Rajidae (skates)

Distribution: North Atlantic Ocean
Depth: 20 - 1000 meter
Max. Size: ~ 100 cm

 

Description


 

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Apristurus laurussoniiApristurus laurussonii
(Iceland catshark)

Scientific name: Apristurus laurussonii (Saemundsson, 1922)
Popular names: Flathead Catshark, Madeira Catshark
Danish name: Islandsk kattehaj

Family: Scyliorhinidae (Catsharks)

Distribution: North Atlantic Ocean
Capture sites: Davis Strait

Depth: 560 - 2000 meter (benthic)
Max. size: ~ 72 cm 

Description


 

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bathyraja spinicaudaBathyraja spinicauda
(Spinetail ray)

Scientific name: Bathyraja spinicauda (Jensen, 1914)
Popular names: Spinetail ray, Spiny-tailed skate
Danish name: Tornhalet rokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture site:

Depth: 140 - 1463 m (bathydemersal)
Max. size: 170 cm

Description



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centroscyllium fabriciiCentroscyllium fabricii
(Black dogfish)

Scientific name: Centroscyllium fabricii (Reinhardt, 1825)
Popular names: Black dogfish
Danish name: Fabricius sorthaj

Family: Etmopteridae (lantern sharks)

Distribution: North Atlantic Ocean
Depth: 180 - 1600 meter (bathydemersal)
Max. Size: ~ 110 cm

 

Description


 

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centroscymnus coelolepisCentroscymnus coelolepis
(Portuguese dogfish)

Scientific name: Centroscymnus coelolepis (Barbosa du Bocage & de Brito Capello, 1864)
Popular names: Portuguese dogfish, portuguese shark
Danish name: Portugisisk fløjlshaj

Family: Somniosidae (sleeper sharks)

Distribution: Circumglobal
Depth: 150 - 3700 meter (bathydemersal)
Max. size: ~ 120 cm

 

Description


 

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Centroscymnus owstoniiCentroscymnus owstonii

(Roughskin dogfish)

Scientific name: Centroscymnus owstonii (Garman, 1906)
Popular names: Roughskin dogfish, Black shark, Deepwater dogfish
Danish name: ?

Family: Squaliformes (Bramble, sleeper and dogfish sharks)

Distribution: North Atlantic Ocean
Capture sites: Davis Strait

Depth: 1500 - 4700 meter (bathydemersal)
Max. size: ~ 121 cm 

Description


 

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chimaera monstrosaChimaera monstrosa
(Rabbit fish)

Scientific name: Chimaera monstrosa (Linnaeus, 1758)
Popular names: Rabbit fish, rat fish
Danish name: Havmus

Family: Chimaeridae (Shortnose chimaeras or ratfishes)

Distribution: Eastern Atlantic: northern Norway and Iceland, Skagerrak and Kattegat south to Morocco including western Mediterranean (some isolated records from eastern part), Azores and Madeira Islands.
Capture site: Denmark Strait

Depth: 40 - 1000 meter (bathydemersal)
Max. size: 150 cm / 2.5 kg

 

Description



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dipturus laevisDipturus laevis
(Barndoor skate)

Scientific name: Dipturus laevis (Mitchill, 1818)
Popular names: Barndoor skate
Danish name: Ladeportsrokke

Family: Rajidae (Skates)

Distribution: Western Atlantic Ocean
Capture sites: Davis Strait

Depth: 140 - 2500 meter (bathydemersal)
Max. size: ~ 150 cm /18 kg

Description


 

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hydrolagus affinisHydrolagus affinis
(Smalleyed rabbitfish)

Scientific name: Hydrolagus affinis (de Brito Capello, 1868)
Popular names: Smalleyed rabbitfish
Danish name: Småøjet havmus

Family: Chimaeridae (shortnose chimaeras or ratfishes)

Distribution: North Atlantic Ocean
Depth: 300 - 3000 meter (bathydemersal)
Max. size: ~ 130 cm

 

Description


 

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malacoraja krefftiMalacoraja kreffti
(Krefft's ray)

Scientific name: Malacoraja kreffti (Stehmann, 1978)
Popular names: Krefft's ray
Danish name: Krefft's rokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture sites:

Depth: ~ 1200 meter
Max. size: ~ 70 cm

Description



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mustelus asteriasMustelus asterias
(Starry smooth-hound)

Scientific name: Mustelus asterias (Cloquet, 1821)
Popular names: Starry smooth-hound
Danish name: Stjernehaj

Family: Triakidae (Houndsharks)

Depth: 0 - 350 meter
Max. size: 140 cm / 4.8 kg

Capture sites: The North Sea

Description



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mustelus mustelusMustelus mustelus
(Common smooth-hound)

Scientific name: Mustelus mustelus (Linnaeus, 1758)
Popular names: Common smooth-hound
Danish name: Glathaj

Family: Triakidae (Houndsharks)

Depth: 0 - 630 meter
Max. size: 200 cm

Capture sites: The North Sea

 

Description



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raja brachyuraRaja brachyura (Blonde ray)

Scientific name: Raja brachyura (Lafont, 1873)
Popular names: Blonde ray
Danish name: Småplettet rokke

Family: Rajidae (Skates)

Depth: 10 - 400 meter (demersal)
Max. size: 120 cm / 14.3 kg

Capture sites: The North Sea

 

Description



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rajella bathyphilaRajella bathyphila
(Deep-water ray)

Scientific name: Rajella bathyphila (Holt & Byrne, 1908)
Popular names: Deep-water ray
Danish name: Dybhavsrokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture sites:

Depth: 600 - 2172 m (bathydemersal)
Max. size: ~ 90 cm

Description



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Rajella fyllaeRajella fyllae
(Round ray)

Scientific name: Rajella fyllae (Lütken, 1887)
Popular names: Round ray
Danish name: Fyllas rokke

Family: Rajidae (Skates)

Distribution: North Atlantic Ocean
Capture sites: Davis and Denmark Strait

Depth: 170 - 2100 meter (bathydemersal)
Max. size: ~ 60 cm 

 

Description


 

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Rajella linteaRajella lintea
(Sailray)

Scientific name: Rajella lintea (Fries, 1838)
Popular names: Sailray, Pale ray, Sharpnose skate, white ray
Danish name: Hvidrokke

Family: Rajidae (Skates)

Distribution: Northeast Atlantic: Iceland and along rise to Faroes, also Norwegian coasts and Skagerrak. Northwest Atlantic: western Greenland
Capture site:

Depth: 150 - 1170 m (bathydemersal)
Max. size: 123 cm / 11.2 kg

Description



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scyliorhinus caniculaScyliorhinus canicula
(Small-spotted catshark)

Scientific name: Alosa falax (Linnaeus, 1758)
Popular names: Small-spotted catshark and dogfish
Danish name: Småplettet rødhaj

Family: Scyliorhinidae (Cat sharks)

Depth: 10 - 800 meter (demersal)
Max. size: 100 cm / 1.3 kg

Capture sites: The North Sea

 

Description



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Somniosus microcephalusSomniosus microcephalus (Greenland shark)

Scientific name: Somniosus microcephalus (Bloch & Schneider, 1801)
Popular names: Greenland shark, sleeper shark, gurry shark, ground shark etc.

Family: Somniosidae (sleeper sharks)

Range: North Atlantic Ocean
Max. size: ~ 7 meter / ~ 1000 kg

 

Description


 

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