Arctic rockling explained

The Arctic rockling (Gaidropsarus argentatus), also called the silver rockling or Arctic threebeard,[1] [2] is a species of fish in the family Lotidae.[3] [4] [5]

Description

The Arctic rockling's maximum length is .[6] 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).[7] 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.[1]

Habitat

Arctic rockling live in the northeastern Atlantic Ocean,[8] in very cold water, or lower.[9] It is epibenthic, living over gravel, mud or sand at depths of, sometimes as shallow as .[1]

Behaviour

Arctic rockling feed on decapod, amphipod, and euphausiid crustaceans, and fish.[10]

Notes and References

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

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