Pointy-nosed blue chimaera: Difference between revisions
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The '''pointy-nosed blue chimaera''' (''Hydrolagus trolli''), also known as the '''pointy-nosed blue ratfish''', '''Ray Troll's chimaera''' or '''abyssal ghostshark''', is a species of [[deep |
The '''pointy-nosed blue chimaera''' (''Hydrolagus trolli''), also known as the '''pointy-nosed blue ratfish''', '''Ray Troll's chimaera''' or '''abyssal ghostshark''', is a species of [[deep-sea fish]] in the family [[Chimaeridae]].<ref name=IUCN/><ref name=CoF/><ref name=FishBase/><ref name="Monterey Bay Aquarium"/> |
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==Etymology== |
==Etymology== |
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This species is found in the [[Pacific Ocean|Pacific]] and [[Southern Ocean]]s, with records from near [[New Caledonia]], [[New Zealand]], and southern [[Australia]]; records from South Africa refer to other species. It is a deep-water species that has been recorded on deep continental and insular slopes at depths between {{convert|610|and|2000|m}}, but more commonly below {{convert|1000|m}}.<ref name=IUCN/> |
This species is found in the [[Pacific Ocean|Pacific]] and [[Southern Ocean]]s, with records from near [[New Caledonia]], [[New Zealand]], and southern [[Australia]]; records from South Africa refer to other species. It is a deep-water species that has been recorded on deep continental and insular slopes at depths between {{convert|610|and|2000|m}}, but more commonly below {{convert|1000|m}}.<ref name=IUCN/> |
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Specimens provisionally assigned to this species have also seen in waters near [[California]] and [[Hawaii]], alive, in 2009. As with many other deep |
Specimens provisionally assigned to this species have also seen in waters near [[California]] and [[Hawaii]], alive, in 2009. As with many other deep-sea species, its distribution likely covers much of the globe, but is poorly known. However, this species of Chimaeridae was the first to have been captured on film, leading to further insight on it.<ref>{{cite news |first1=Jason |last1=Bittel| url = http://news.nationalgeographic.com/2016/12/pointy-nosed-blue-chimaeras-ghost-sharks/ | title = Deep-Sea Ghost Shark Filmed Alive In Ocean For First Time |publisher=[[National Geographic Society|National Geographic]] | accessdate = 2016-12-16 | date = December 15, 2016 }}</ref><ref>{{cite news |url=https://www.yahoo.com/news/researchers-may-found-elusive-ghost-190003349.html |title=Researchers May Have Found Elusive 'Ghost Shark' |first1=Greg |last1=Price |newspaper=[[International Business Times]] |via=[[Yahoo]] |accessdate=December 16, 2016}}</ref><ref name="Monterey Bay Aquarium"/> |
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==Description== |
==Description== |
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The body has distinctive blue-gray coloration.<ref name=IUCN/><ref name=FishBase/> |
The body has distinctive blue-gray coloration.<ref name=IUCN/><ref name=FishBase/> A dark line is seen around the [[Orbit (anatomy)|orbit]], as well as dark shadowing along edges of [[lateral line]] canals. The snout is pointed. It grows to {{convert|120|cm|abbr=on}} [[Fish measurement|total length]].<ref name=FishBase/> It also has a [[venomous]] spine in front of its dorsal fin, which is used in defense.<ref>[https://www.leisurepro.com/blog/explore-the-blue/mbari-scientists-catch-elusive-ghost-shark-film Ghost Shark(Hydrolagus trolli)]/</ref> |
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Females mature |
Females mature around {{convert|55|cm|abbr=on}} in body length and males at {{convert|60|-|65|cm|abbr=on}}.<ref name=IUCN/> The species is [[oviparous]].<ref name=IUCN/><ref name=FishBase/> |
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==Fisheries== |
==Fisheries== |
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The species has no commercial value but it occurs as [[bycatch]] in fisheries with deep-water benthic trawls. It might also be bycatch in (illegal) [[Patagonian toothfish]] fisheries. However, most of the habitat of this species is deeper than where deep-water fisheries typically operate.<ref name=IUCN/> |
The species has no commercial value, but it occurs as [[bycatch]] in fisheries with deep-water benthic trawls. It might also be bycatch in (illegal) [[Patagonian toothfish]] fisheries. However, most of the habitat of this species is deeper than where deep-water fisheries typically operate.<ref name=IUCN/> |
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==References== |
==References== |
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Revision as of 17:36, 29 December 2018
| Pointy-nosed blue chimaera | |
|---|---|
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Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Holocephali |
| Order: | Chimaeriformes |
| Family: | Chimaeridae |
| Genus: | Hydrolagus |
| Species: | H. trolli
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| Binomial name | |
| Hydrolagus trolli | |
The pointy-nosed blue chimaera (Hydrolagus trolli), also known as the pointy-nosed blue ratfish, Ray Troll's chimaera or abyssal ghostshark, is a species of deep-sea fish in the family Chimaeridae.[1][2][3][4]
Etymology
The specific name trolli honors Ray Troll, an American artist in whose art chimaeras have featured.[5][4]
Distribution and habitat
This species is found in the Pacific and Southern Oceans, with records from near New Caledonia, New Zealand, and southern Australia; records from South Africa refer to other species. It is a deep-water species that has been recorded on deep continental and insular slopes at depths between 610 and 2,000 metres (2,000 and 6,560 ft), but more commonly below 1,000 metres (3,300 ft).[1]
Specimens provisionally assigned to this species have also seen in waters near California and Hawaii, alive, in 2009. As with many other deep-sea species, its distribution likely covers much of the globe, but is poorly known. However, this species of Chimaeridae was the first to have been captured on film, leading to further insight on it.[6][7][4]
Description
The body has distinctive blue-gray coloration.[1][3] A dark line is seen around the orbit, as well as dark shadowing along edges of lateral line canals. The snout is pointed. It grows to 120 cm (47 in) total length.[3] It also has a venomous spine in front of its dorsal fin, which is used in defense.[8]
Females mature around 55 cm (22 in) in body length and males at 60–65 cm (24–26 in).[1] The species is oviparous.[1][3]
Fisheries
The species has no commercial value, but it occurs as bycatch in fisheries with deep-water benthic trawls. It might also be bycatch in (illegal) Patagonian toothfish fisheries. However, most of the habitat of this species is deeper than where deep-water fisheries typically operate.[1]
References
- ^ a b c d e f g Compagno, L.J.V.; Dagit, D.D. (2015). "Hydrolagus trolli". IUCN Red List of Threatened Species. 2015. IUCN: e.T60197A70709551. Retrieved 5 July 2017.
- ^ Eschmeyer, W. N.; R. Fricke; R. van der Laan, eds. (30 June 2017). "Catalog of Fishes". California Academy of Sciences. Retrieved 5 July 2017.
- ^ a b c d Froese, Rainer; Pauly, Daniel (eds.). "Hydrolagus trolli". FishBase. February 2017 version.
- ^ a b c "The pointy-nosed blue ratfish Hydrolagus trolli" (Video). Monterey Bay Aquarium. 26 October 2016. Retrieved December 16, 2016 – via YouTube.
- ^ "Ratfish named after Ketchikan artist Ray Troll". Ketchikan Daily News. November 8, 2002. Retrieved 2009-02-01.
- ^ Bittel, Jason (December 15, 2016). "Deep-Sea Ghost Shark Filmed Alive In Ocean For First Time". National Geographic. Retrieved 2016-12-16.
- ^ Price, Greg. "Researchers May Have Found Elusive 'Ghost Shark'". International Business Times. Retrieved December 16, 2016 – via Yahoo.
- ^ Ghost Shark(Hydrolagus trolli)/
Wikispecies has information related to Hydrolagus trolli.