Certifier : 
MRAG Americas, Inc.
Certified status : 
Combined with another assessment
Certified since : 
20 May 2010
Certificate expires : 
28 Apr 2021

Overview

Fisheries are composed of one or more parts, each of which is entitled to receive an MSC certificate. These parts or “units” are defined by their target stock(s), fishing gear type(s) and if relevant vessel type(s), and the fishing fleets or groups of vessels.

Attention

Some or all units that participated in this fishery are now covered by another assessment. Please see the BSAI and GOA flatfish for more information.

Units of Certification & Certificate Information

  • No longer in the program
    MSC UoC Number Species Gear Type Ocean Area Status (Units of Certification) Certificate Code
    UoC-0110 Arrow-tooth flounder (Atheresthes stomias) Trawls - Bottom trawls - otter trawls 67 (Pacific, Northeast) Withdrawn MSC-F-31212 (MRAG-F-0027)
    UoC-0109 Flathead sole (Hippoglossoides elassodon) Trawls - Bottom trawls - otter trawls 67 (Pacific, Northeast) Withdrawn MSC-F-31212 (MRAG-F-0027)
    UoC-0113 Northern rock sole (Lepidopsetta polyxystra) Trawls - Bottom trawls - otter trawls 67 (Pacific, Northeast) Withdrawn MSC-F-31212 (MRAG-F-0027)
    UoC-0111 Rex sole (Glyptocephalus zachirus) Trawls - Bottom trawls - otter trawls 67 (Pacific, Northeast) Withdrawn MSC-F-31212 (MRAG-F-0027)
    UoC-0112 Southern rock sole (Lepidopsetta bilineata) Trawls - Bottom trawls - otter trawls 67 (Pacific, Northeast) Withdrawn MSC-F-31212 (MRAG-F-0027)

View glossary of terms

Catch by Species

Species Reported Catch Year Metric Tonnes
Flathead sole (Hippoglossoides elassodon) 2018 2,045
Rex sole (Glyptocephalus zachirus) 2018 1,638
Arrow-tooth flounder (Atheresthes stomias) 2018 17,498

Information is provided by an independent Conformity Assessment Body as live weight (the weight of species at the time of catch, before processing) and where a fishing season covers multiple years, the end year is given as the reported catch year. Additional information is available in the latest report, see the assessments page.

About this Fishery

After World War Two, the Gulf of Alaska and the Bering Sea was fished intensively for various bottom fish species by the Japanese and others. In the 1950s and 1960s, large-scale trawling by foreign fishing vessels occurred throughout the region targeting mainly Pacific Ocean perch, flounders and Pacific cod. Pacific Ocean perch and yellowfin sole stocks were apparently overfished, resulting in a collapse of some stocks that are currently being or have been rebuilt.

The certified flatfish fisheries in the Gulf of Alaska target five species: flathead sole, arrowtooth flounder, rex sole, northern rock sole and southern rock sole.

They include both “catcher boats”, of 60-90 feet (~20-30m) that deliver fresh fish to processors on shore, and larger “catcher-processors” of 110-270 (~35-80m) that head, gut and freeze the fish on board. 

As flatfish are bottom dwellers, the boats use bottom trawling. New gear has been introduced to minimize impact on the seabed, and certain sensitive habitats are avoided.

There are strict quotas in place for the various flatfish species the fishery targets as well as bycatch species such as crab and halibut. The fishery has also made improvements such as halibut excluder devices to reduce bycatch.

Arrowtooth flounder (Atheresthes stomias) image © Scandinavian Fishing Year Book

Market Information

Alaska flatfish are sold to domestic, Asian and European consumers.