Arctic rockling

Arctic rockling
Scientific 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

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]

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.