It lives at depths between 300 and 1000 metres and is often pelagic (i.e. far from the bottom). It migrates vertically, depending on the amount of light; it swims deep during the light of day but tends to rise to the upper layers during the night.
The deep sea redfish feeds on a variety of food organisms: euphausiids, hyperiids, cephalopods and chaetognaths. The bigger redfish feeds mainly on small fish such as capelin, herring and shrimp. In contrast to most fish species that spawn unfertilized eggs, the deep-water redfish has internal fertilization and spawns free-living larvae. The eggs are fertilised in the autumn or early winter and the spawning takes place in April and May. The redfish is slow-growing and not usually sexually mature before the age of 14 years. They can live to be 75.
The golden redfish (Sebastes marinus) is mainly caught inside Icelandic waters, as well as in small volumes in the Barents Sea, and as bycatch in the Norwegian Sea.
There are three biological stocks of deep sea redfish (Sebastes mentella). There is the Icelandic slope redfish, found inside Icelandic waters. Also in the Icelandic zone are the shallow and deep pelagic redfish, although they’re mainly found in the Irminger Sea and adjacent waters (also called Reykjanes Ridge).
Both redfish species (Sebastes marinus and Sebastes mentella) also occur in the Barents Sea and Norwegian Sea.
Its members are Denmark (representing the Faroe Islands and Greenland), Iceland, the Russian Federation, the EU and Norway. They base their decisions on recommendations from ICES.
Redfish fisheries in the Barents Sea and Norwegian Sea are managed by the Joint Norwegian–Russian Fisheries Commission (JNRFC).
Year | Landings of deep sea redfish in metric tonnes
|1990 | 32K||1994 | 148K||1998 | 117K||2002 | 146K||2006 | 83K||2010 | 76K|
|1991 | 27K||1995 | 175K||1999 | 109K||2003 | 161K||2007 | 64K||2011 | 62K|
|1992 | 66K||1996 | 180K||2000 | 126K||2004 | 126K||2008 | 53K|
|1993 | 116K||1997 | 123K||2001 | 129K||2005 | 74K||2009 | 59K|
Source: Marine Research Institute, Iceland
Composition of food per 100g edible portion
|Energy||100 kcal (421 kJ)||Non saturated fatty acids||2.5 g|
|Fat||3.0 g||Protein||18.5 g|
|Saturated fatty acids||0.5 g||Sodium||93 mg|
Source: Matis, Iceland