Fisheries and Resources Monitoring System

American Plaice - Flemish Cap
Fact Sheet Title  Fact Sheet
Stocks management recommendations 2020
American Plaice - Flemish Cap
Fact Sheet Citation  
American plaice in Div. 3M
Owned byNorthwest Atlantic Fisheries Organization (NAFO) – ownership
ident Blockident Blockdisplay tree map
Species List:
Species Ref: en - Amer. plaice(=Long rough dab), fr - Balai(=Plie canadienne), es - Platija americana, ar - هوشع كندي, zh - 拟庸鲽, ru - Камбала-ерш
ident Block American Plaice - Flemish Cap
Aq Res
Biological Stock: Yes         Value: Regional
Management unit: Yes        Reference year: 2019
Aq Res State Trend
Aq Res State Trend
Aq Res State Trend Aq Res State Trend
Aq Res State TrendNone-Low Fishing MortalityNo or low fishing mortalityRed
Aq Res State TrendDepleted Stock SizeDepleted

The stock has increased in recent years due to improved recruitment (at age 3) since 2009, and recovered to the levels of the mid 1990s, when the fishery was closed. Both catches and F remain low, although slightly higher catches are observed since 2013.
Habitat Bio
Climatic Zone: Temperate.   Bottom Type: Unspecified.   Depth Zone: Slope - Deepslope (500 m - 1000 m).   Horizontal Dist: Oceanic.   Vertical Dist: Demersal/Benthic.  

Geo Dist
Geo Dist: High Seas Purely

Water Area Overview
Spatial Scale: Regional

Water Area Overview
Aq Res Struct
Biological Stock: Yes

American plaice is caught as bycatch in otter trawl fisheries, mainly the cod and redfish fisheries. From 1979 to 1993 a TAC of 2 000 tonnes was in effect for this stock. A reduction to 1 000 tonnes was agreed for 1994 and 1995 and a moratorium was agreed to thereafter.

Recent catch estimates and TACs (‘000 tonnes) are as follows:

Effects of the fishery on the ecosystem

No directed fishery. General impacts of fishing gear on the ecosystem should be considered.
Bio Assess
Ref Point

Scientific Council is not in a position to provide proxies for biomass or fishing mortality reference points at this time.

Quantitative assessment of risk at various catch options is not possible at this time.
Assess Models
Analytical assessment

This assessment is based upon a qualitative evaluation of research vessel survey series and bycatch data from commercial fisheries.

The next full assessment is planned for 2023.

Fishing Mortality



Human impact

Mainly fishery related mortality. Other sources (e.g. pollution, shipping, oil-industry) are undocumented.

Biological and environmental interactions

The stock occurs mainly at depths shallower than 600 m on Flemish Cap. Main stomach contents are echinoderms, shrimp and hyperiids.
Management unit: Yes


Recommendation for 2021 - 2023

The stock has recovered to the levels of the mid 1990s, when the fishery was closed. SC considers that there is not sufficient evidence that the stock would be able to sustain a fishery at this time and recommends that there be no directed fishing in 2021, 2022 and 2023. Bycatch should be kept at the lowest possible level.

No explicit management plan or management objectives defined by Fisheries Commission. General Convention objectives (GC Doc. 08/3) are applied.

Stock definition for management purposes

The American plaice stock in Flemish Cap (Div. 3M) is considered to be a distinct population.
Northwest Atlantic Fisheries Organization (NAFO) Scientific Council Documents. SCR Doc. 05/29, 20/11, 20/39 and SCS Doc. 18/8, 18/13, 19/9, 20/7, 20/9, 20/13. Click to open
Northwest Atlantic Fisheries Organization (NAFO). Report of the Scientific Council Meeting, 28 May - 12 June, 2020. NAFO SCS Doc. 20/14Rev. Click to open
Northwest Atlantic Fisheries Organization (NAFO). 2008. Resolution on the Interpretation and Implementation of the Convention on the Future Multilateral Cooperation in the Northwest Atlantic Fisheries. 30th Annual Meeting, September 2008. NAFO/GC Doc. 08/3. Click to open
powered by FIGIS  © FAO, 2024
Powered by FIGIS