| Sebastes viviparus | |
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Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Scorpaenidae |
| Genus: | Sebastes |
| Species: | S. viviparus |
| Binomial name | |
| Sebastes viviparus Krøyer, 1845 | |
| Synonyms[1] | |
Sebastes marinus viviparusKrøyer, 1844 | |
Sebastes viviparus, theNorway redfish,small redfish,lesser redfish,ocean perch orrosefish, is aspecies of marineray-finned fish belonging to the subfamilySebastinae, the rockfishes, part of thefamilyScorpaenidae. It is found in the northern Atlantic Ocean.
Sebastes viviparus was first formallydescribed in 1845 by the DanishzoologistHenrik Nikolai Krøyer, although he had described it in 1844 as asubspecies ofSebastes marinus but this taxon is thought to be a synonym ofSerranus scriba, with thetype locality given as Norway.[2] It is classified within thesubgenusSebastes. Thespecific nameviviparus means "live bearing".[3]
Sebastes viviparus is a relatively small species of rockfish[4] with a maximum recordedtotal length of 65 cm (26 in), although 25 cm (9.8 in) is more typical, and a maximum published weight of 1.0 kg (2.2 lb).[1] Thedorsal fin has 14-16 spines and 12–15, normally mostly 13–14, soft rays and theanal fin with 3 spines and 6-8 soft rays.[5] The eyes are large while the protrusible, oblique mouth is moderately large and is positioned terminally. There are several large spines on the head and body. The large fan-likepectoral fin has a broad base and thecaudal fin is truncate. The colour is pale red with three clear blotches on the back along the base of the dorsal fin.[4]
Sebastes viviparus is found in the northeast Atlantic. It occurs along the Norwegian coast from theKattegat north toTanafjord inFinnmark. It is rare offBear Island. It is also found around theGreat Britain and Ireland from the Shetland Island southwards but it is rare in theEnglish Channel. It has been recorded fromRockall Bank, it is common around theFaroes and Iceland but it is erratic in its occurrences off East Greenland.[1] It is ademersal fish which is found at depths of 50 to 300 m (160 to 980 ft).[1] It typically occurs on rocky substartes close to shore.[5]
Sebastes viviparus is found in shoals that move closer to the coast during the summer. Their diet is made up of various small crustaceans and young fishes. They are ovoviviparous, like all rockfishes.[1]
Sebastes viviparus is generally considered too small to be a target for commercial fisheries, although there is a small fishery in Iceland. It is vulnerable to overfishing due to the low growth rate of population.[4]
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