Arctic rockling

The Arctic rockling (Gaidropsarus argentatus), also called the silver rockling or Arctic threebeard,[2][3] is a species of fish in the family Lotidae.[4][5][6]

Arctic rockling
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gadiformes
Family: Lotidae
Genus: Gaidropsarus
Species:
G. argentatus
Binomial name
Gaidropsarus argentatus
(Reinhardt, 1837)
Synonyms[1]
  • Gaidropsarus reinhardti Collett, 1879
  • Motella argentata Reinhardt, 1837
  • Motella reinhardi Collett, 1879
  • Motella reinhardti Collett, 1879
  • Onogadus argentatus Reinhardt, 1838
  • Onos argentatus Reinhardt, 1837
  • Onos reinhardi Collett, 1879
  • Onus reinhardti Collett, 1879

Description
Illustration of fish found on the Danish Ingolf expedition; Arctic rockling is numbered 8, the orange fish in the upper right.

The Arctic rockling's maximum length is 35 cm (14 in).[7] It has two dorsal fins and one anal fin, with the first ray in the first dorsal fin being elongated to form a whisker-like projection. It has 51–53 vertebrae (including urostyle).[8] The upper body is brown-red, its belly pink, there is a blue hue around its head, and the barbels and fin tips are red. The young are silvery in colour, hence the name.[2]

Habitat

Arctic rockling live in the northeastern Atlantic Ocean,[9] in very cold water, 0 °C (32 °F) or lower.[10] It is epibenthic, living over gravel, mud or sand at depths of 400–500 m (1,300–1,600 ft), sometimes as shallow as 150 m (490 ft).[2]

Behaviour

Arctic rockling feed on decapod, amphipod, and euphausiid crustaceans, and fish.[11]

References
  1. "WoRMS - World Register of Marine Species - Gaidropsarus argentatus (Reinhardt, 1837)". www.marinespecies.org.
  2. "Silver Rockling - Gaidropsarus argentatus". www.arctic.uoguelph.ca.
  3. Denmark), Jorgen Nielsen (Natural History Museum of; Paul Fernandes (School of Biological Sciences, Zoology Building; Lorance (IFREMER), Pascal; Research), Kjell Nedreaas (Institute of Marine; Strathclyde), Robin Cook (MASTS Marine Population Modelling Group Department of Mathematics and Statistics University of; Ann-Britt Florin (Institute Of Coastal Research, Department of Aquatic Resources (October 17, 2014). "IUCN Red List of Threatened Species: Gaidropsarus argentatus". IUCN Red List of Threatened Species.
  4. "Bulletin of the United States National Museum". U.S. Government Printing Office. August 28, 1898 – via Google Books.
  5. Farrell, Anthony P.; Steffensen, John F. (October 26, 2005). Fish Physiology: The Physiology of Polar Fishes. Gulf Professional Publishing. ISBN 9780123504463 – via Google Books.
  6. Campana, Steven E. (August 28, 2004). Photographic Atlas of Fish Otoliths of the Northwest Atlantic Ocean. NRC Research Press. ISBN 9780660191089 – via Google Books.
  7. "WoRMS - World Register of Marine Species - Gaidropsarus argentatus (Reinhardt, 1837)". www.marinespecies.org.
  8. Coad, Brian W.; Reist, James D. (January 1, 2018). Marine Fishes of Arctic Canada. University of Toronto Press. ISBN 9781442647107 – via Google Books.
  9. "Fishery Bulletin". National Marine Fisheries Service. August 28, 1979 – via Google Books.
  10. "Marine Species Identification Portal : Arctic rockling - Onogadus argentatus". species-identification.org.
  11. "WoRMS - World Register of Marine Species - Gaidropsarus argentatus (Reinhardt, 1837)". www.marinespecies.org.
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