squaliform
The Squaliformes are an order of sharks that includes about 126 species in seven families.
Members of the order have two dorsal fins, which usually possess spines, they usually have a sharp head, no anal fin or nictitating membrane, and fi ...
genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...
and about 15 species. They are sometimes called gulper sharks, but this is also the name of a specific species in the family, '' Centrophorus granulosus''.
These are generally deepwater fish. While some, such as the gulper shark ''C. granulosus'', are found worldwide and fished commercially, others are uncommon and little-known. Their usual prey is other fish; some are known to feed on
squid
True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting t ...
,
octopus
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttle ...
, and
shrimp
Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...
. Some species live on the bottom (
benthic
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "t ...
), while others are pelagic. They are ovoviviparous, with the female retaining the egg-cases in her body until they hatch.
They are small to medium sharks, ranging from in adult body length. The members of the genus ''
Deania
''Deania'' is a genus of long-snouted, deepwater dogfish sharks in the family Centrophoridae.
Species
* '' Deania calcea'' R. T. Lowe, 1839 (birdbeak dogfish)
* '' Deania hystricosa'' Garman, 1906 (rough longnose dogfish)
* '' Deania profundoru ...
Bloch Bloch is a surname of German origin. Notable people with this surname include:
A–F
* (1859-1914), French rabbi
*Adele Bloch-Bauer (1881-1925), Austrian entrepreneur
*Albert Bloch (1882–1961), American painter
* (born 1972), German motor journal ...
W. T. White W. may refer to:
* SoHo (Australian TV channel) (previously W.), an Australian pay television channel
* ''W.'' (film), a 2008 American biographical drama film based on the life of George W. Bush
* "W.", the fifth track from Codeine's 1992 EP ''Bar ...
,
Ebert Ebert is a surname of German origin. Notable people with the surname include:
* Alex Ebert (born 1978), lead singer for the band Ima Robot
* Anton Ebert (1845–1896), Austrian painter
* Beanie Ebert (1902–1980), American football player
* Bla ...
Centrophorus zeehaani
The southern dogfish (''Centrophorus zeehaani'') is a species of shark in the family Centrophoridae
The Centrophoridae are a family of squaliform sharks. The family contains just two genera and about 15 species. They are sometimes called gul ...
''
W. T. White W. may refer to:
* SoHo (Australian TV channel) (previously W.), an Australian pay television channel
* ''W.'' (film), a 2008 American biographical drama film based on the life of George W. Bush
* "W.", the fifth track from Codeine's 1992 EP ''Bar ...
,
Ebert Ebert is a surname of German origin. Notable people with the surname include:
* Alex Ebert (born 1978), lead singer for the band Ima Robot
* Anton Ebert (1845–1896), Austrian painter
* Beanie Ebert (1902–1980), American football player
* Bla ...
Deania
''Deania'' is a genus of long-snouted, deepwater dogfish sharks in the family Centrophoridae.
Species
* '' Deania calcea'' R. T. Lowe, 1839 (birdbeak dogfish)
* '' Deania hystricosa'' Garman, 1906 (rough longnose dogfish)
* '' Deania profundoru ...
Deania calcea
The birdbeak dogfish (''Deania calcea'') is a dogfish shark of the family Centrophoridae found in the Pacific Ocean around Honshū, Japan, southern Australia, New Zealand, and Chile, and in the Atlantic Ocean from Iceland south to the Cap ...
Deania hystricosa
The rough longnose shark (''Deania hystricosa'') is a little-known deepwater dogfish. This species was described by Samuel Garman in 1906 and originally named ''Acanthidium hystricosa.''
The rough longnose dogfish has an extremely long snout, n ...
'' (Garman, 1906) (rough longnose dogfish)
** ''
Deania profundorum
The arrowhead dogfish (''Deania profundorum'') is a small little known deepwater dogfish of the family Centrophoridae.
Physical characteristics
The arrowhead dogfish has an extremely long angular snout, no anal fin, small first dorsal and long ...
Radcliffe
Radcliffe or Radcliff may refer to:
Places
* Radcliffe Line, a border between India and Pakistan
United Kingdom
* Radcliffe, Greater Manchester
** Radcliffe Tower, the remains of a medieval manor house in the town
** Radcliffe tram stop
* ...
, 1912) (arrowhead dogfish)
** ''
Deania quadrispinosa
The longsnout dogfish (''Deania quadrispinosa'') is a little-known deepwater dogfish, found in the Atlantic and Indian Oceans from Namibia to Mozambique and in the South Pacific off southern Australia and New Zealand.
The longsnout dogfi ...
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