Sebastes norvegicus
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Scientific classification 
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| Template:Taxon infoTemplate:Taxon italics (Ascanius, 1772)
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Sebastes norvegicus, the rose fish, rock fish, ocean perch, Atlantic redfish, Norway haddock, golden redfish, pinkbelly rosefish, Norway seaperch, Scottish seaperch or bergylt, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the North Atlantic Ocean. It is a -medium-sized, slow-growing, late-maturing fish and the subject of a fishery.
Taxonomy
Sebastes norvegicus was first formally described as Perca norvegicus in 1772 by the Norwegian biologist Peter Ascanius with the type locality given as Norway.[2] The specific name refers to the type locality.[4] In the past, the scientific name Sebastes marinus was frequently used, but this is actually a synonym of Serranus scriba.[5] S. norvegicus was designated as the type species of the genus Sebastes by Pieter Bleeker in 1876.[6] This taxon may be a species complex containing at least 2 new cryptic species which had not been named as of 2017.[7]
Description
Sebastes norvegicus is a large and stocky bodied species of rockfish. Like other scorpionfishes this species has comparatively large fins which have long spines and rays. The caudal fin is weakly truncate while the anal, pectoral and pelvic fins are rounded and the dorsal fin is continuous.[8] The dorsal fin contains between 14 and 16, typically 15, robust spines and 13 to 16, normally 14 or 15, soft rays, while anal fin has 3 spines and about 8 soft rays.[9] There are 1 or 2 spined points above the jaw on the preorbital bone but the ridge below the eye has no spines and is rather weakly defined. There are 5 spines on the preoperculum which are all about the same length. There are spines on the supracleithrum and there are 2 spines on the operculum, the lower one being normally directed downwards and slightly towards the rear, infrequently downwards and forwards. There are also nasal, preocular, supraocular, post-ocular and parietal spines. There is normally no knob on the symphysis of the lower jaw, but if there is on it is a rounded protuberance.[10] The golden redfish reaches a maximum total length of Template:Cvt, although Template:Cvt is more typical, and a maximum published weight of Template:Cvt. The overall colour is vivid red with a dusky patch to the rear of the operculum.[8]
Distribution and habitat
Sebastes norvegicus is found from the Kattegat and the northern part of the North Sea north along the coast of Norway to the western coast of Spitsbergen, the southern part of the Barents Sea and east as far as the Kanin Banks and Novaya Zemlya shoals and it is rare in the White Sea. It is a common species off Iceland and off southeastern Greenland. Elsewhere, along western coast of Greenland. In the western Atlantic it is found as far south as Flemish Cap, the Grand Banks and the Gulf of St. Lawrence.[10] Juveniles can be found in fjords, bays and inshore waters, while the adults are found off the coast at depths between Template:Cvt. Fish living in deeper waters are larger than those living in shallow offshore waters.[9]
Biology
Sebastes norvegicus is predatory and in the summer its diet is dominated by krill, in the autumn and winter by the Atlantic herring (Clupea harengus) and in spring by capelin (Mallotus villosus), Atlantic herrings, krill and ctenophores in spring. It is a gregarious species at all stages of its life history which grows slowly and is long lived.[10] They attain sexual maturity at total lengths between Template:Cvt.[1] It is an ovoviviparous species, like other rockfishes. The males inseminate the females in August–September in the Barents Sea and between October and January in waters off Iceland and Greenland but the oocytyes are not fertilised until February and March with larvae being extruded from April to June or even as late as August.[10]
Fishery
One of the main fishing areas of the rock fish is the Irminger Sea between Iceland and southeastern Greenland. While annual catches during the 1980s and 90s were less than 20 kilotons, this has increased dramatically since 1999, to between 40 and 60 kilotons. In 2000, almost 80 kilotons were caught. Since then, annual catch has declined back to between 40 and 60 kilotons. The meat of this fish is almost always sold filleted, often frozen.
Since the mid-2000s, populations have been considered severely overfished.[11][12][13] According to Greenpeace International, some populations are no longer reproducing sufficiently, and their chances of recovery are slim.[11] In 2010, Greenpeace added the rock fish to its seafood red list.[14] It is also on WWF's list of fish species to avoid, unless the fishery is certified by MSC.[15][16]
In Canada's Gulf of St. Lawrence, the fish was reported to be enjoying a "booming population" in 2021,[17] leading Atlantic provinces to compete for shares of the fishery, estimated to be able to reach 50,000 tonnes of catch annually.
In culture
Sebastes norvegicus appeared on a 15+5 pfennig semi-postal stamp of West Germany in 1964.[18]
References
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- ^ a b Script error: No such module "Cite taxon".
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- ^ Template:Cite iucn
- ^ Page Module:Citation/CS1/styles.css has no content.Christopher Scharpf & Kenneth J. Lazara, eds. (22 May 2021). "Order Perciformes (Part 8): Suborder Scorpaenoidei: Families Sebastidae, Setarchidae and Neosebastidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 28 November 2021.
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- ^ Page Module:Citation/CS1/styles.css has no content.Atal Saha; Lorenz Hauser; Rasmus Hedeholm; et al. (2017). "Cryptic Sebastes norvegicus species in Greenland waters revealed by microsatellites". ICES Journal of Marine Science. 74 (8): 2148–2158. doi:10.1093/icesjms/fsx039.
- ^ a b Page Module:Citation/CS1/styles.css has no content.Barnes, M.K.S. (2008). Tyler-Walters H. and Hiscock K. (eds.). "Sebastes norvegicus Ocean perch". Marine Life Information Network: Biology and Sensitivity Key Information Reviews. Plymouth: Marine Biological Association of the United Kingdom. Retrieved 29 November 2021.
- ^ a b Page Module:Citation/CS1/styles.css has no content.J.C. Hureau. "Golden redfish (Sebastes norvegicus)". Fishes of the NE Atlantic and the Mediterranean. Marine Species Identification Portal. Retrieved 29 November 2021.
- ^ a b c d Page Module:Citation/CS1/styles.css has no content."Species Fact Sheets Sebastes marinus (Linnaeus, 1758)". FAO. Retrieved 29 November 2021.
- ^ a b Greenpeace International Seafood Red list
- ^ Page Module:Citation/CS1/styles.css has no content."- Bestände gefährdet". Deutschlandfunk (in Deutsch). 2004-12-20. Retrieved 2020-09-08.
- ^ Page Module:Citation/CS1/styles.css has no content."Welcher Fisch darf auf den Teller?". Greenpeace.
- ^ Page Module:Citation/CS1/styles.css has no content."Red List - Seafood to avoid at the grocery store". Greenpeace International. Greenpeace. Retrieved 19 February 2016.
- ^ Page Module:Citation/CS1/styles.css has no content."Kalaopas - Puna-ahven". WWF Finland (in suomi). Retrieved 19 February 2016.
- ^ Page Module:Citation/CS1/styles.css has no content.Kinkartz, Sabine (5 April 2014). "EU demand for fish exceeds sustainable supply". Deutsche Welle. Retrieved 8 October 2014.
- ^ Page Module:Citation/CS1/styles.css has no content."Quebec joins Nova Scotia in seeking historical share of redfish quota". CBC News. Canadian Broadcasting Corporation. 25 October 2021. Retrieved 26 October 2021.
- ^ Scott Catalogue No. B397
External links
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