Yellowfin Sole

Quality mark Cultivation
/Keurmerk Wild
Green
Second choice
Avoid
Bycatch

Yellowfin Sole

Limanda aspera
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Origin

Farming- / Catch method

Bottom otter trawl, Trawls

Explanation assessment

Yellowfin sole is vulnerable to fishing pressure due to slow growth and late maturity.

Bottomottertrawls disrupt the seafloor and have a lot of bycatch, mainly of undersized fish.

The fishery in the Bering Sea and the Aleutian Islands is MSC certified. The management is done by the North Pacific Fishery Management Council (NPFMC) The stock is monitored well and the fishing pressure is low. There are also closed areas for this fishery.

Yellowfin Sole

Limanda aspera
  • Jan
  • Feb
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  • Nov
  • Dec
Origin

Pacific Ocean, north-east (FAO 67)

Farming- / Catch method

Bottom otter trawl

Fish stocks and fishing pressure
Ecosystem effects
Fishery management
Final assessment
Explanation assessment

There is no data on the stock of yellowfin sole available, but this species is seen as heavily overfishedOverfished:
A stock is overfished when the stock size has decreased so far that it can no longer produce a maximum sustainable yield. The size of the fish populations is insufficient to reproduce in the long term. 
. Because the fish grow slowly, the stockStock:
The fish of a particular species reproducing in the same area in the same period. 
is vulnerable to fishing mortality.

[Bottom otter trawls] plough through the seabed and there is often bycatchBycatch:
Species caught next to species targeted for fishery. By-catches can consist of non-commercial species and species that are too small, and can be kept (this part is sometimes called by-product) or thrown back into the sea (discards). 
of [undersized fish] and non-target species. This method has also high fuel usage.

There is too little information on the management of this fishery available.

 

General

Flatfish

Flatfish belong to the order Pleuronectoformes. There are more than 500 species of flatfish. Flatfish live on and partly in the seabed, only the halibut swims higher up in the water column. Flatfish have an oblong, flat shape and their eyes on one side. The upper-side, the eye-side, of the flatfish has a camouflage colour and the underside is white. It may seem like flatfish swim on their belly, however, in fact, they are laying on their side. Flatfish larvae have a regular fish shape, with eyes on each side and a vertical swimming mode. After 6 weeks, one of the eyes migrates upwards, over the head to the other side. From now own, the flatfish swims with their eyes up and their blind side facing the seabed.

The best known flatfish species in the Netherlands are sole and plaice. Other flatfish species that occur in the North Sea are the common dab, halibut, turbot, brill, European flounder and lemon sole. Flatfish are caught with beam trawls, pulse trawls or demersal otter trawls.

 

Yellowfin Sole

There is much flatfish from Pacific Ocean on the market in the Netherlands. Especially yellowfin sole and rock sole are popular. These flatfish can reach up to 60 cm and get 22 years old. Yellowfin sole is found in the northern part of the Pacific Ocean, to a depth of 550 m. Rock sole is mostly found in the north-eastern Pacific Ocean, around Canada and Alaska.