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Dieren en planten

Fish   Flatfish   Sole   Plaice   Dab   Marine fauna   The fauna coastal waters   Fauna in tidal areas   Fish   

Sole

size:

up to 70 centimeters

weight:

up to 3 kilograms

color:

gray-brown on the right side, creamy white on the left side

age:

20 years

food:

worms, shellfish, crustaceans

movement:

swimming, burrowing

enemies:

people, seals, zeehonden

reproduction:

sexual

  • Dut: Tong, gewone tong
  • Lat: Solea solea
  • Eng: Sole (common sole)
  • Ger: Seezunge
  • Fren: Sole (sole commune)
  • Dan: Tunge
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Sole, Ecomare

Sole

Sole has a flattened elongated shaped body. It can burrow itself almost completely in a sandy or muddy bottom, where it prefers to reside. It looks for worms using feelers hanging under its chin. Sole is a  nocturnal hunter. It migrates to fixed spawning grounds in the southern North Sea. At night, this species sometimes swims far above the sea floor where the sea current carries it to other territories.

  • Taking advantage of the fisheries?

    Sole is the most important fish for Dutch fishermen. They earn them lots of money because it is such a tasty fish. Strange enough, this fish profits from beam trawl fisheries. When the heavy chains churn up the sea bottom, many benthic animals are killed or wounded. They form easy prey for crabs, starfish and fish such as sole and plaice. Furthermore a sole's favorite food, worms, grows well in the churned-up sea floor.

  • Distribution
    Distribution of sole, Ecomare

    Sole is a common fish species found in the northeastern section of the Atlantic Ocean and in the North Sea. It has a preference for warm sea bottoms. The northern border for its distribution area lies in the North Sea. During severe winters, sole migrates to places where the sea floor remains the warmest. According to studies done by fishery biologists working together under ICES, this species is spreading its distribution area further northwards. The Wadden Sea is one of the important nursery areas for young sole.

  • Development of the sole stock
    Spawning stock and yield of sole (North Sea), Ecomare

    In 2011, 36000 tons of sole swam in the North Sea. That is much more than a few years ago which is why fishery biologists believe that sole is out of the danger zone. Experience from the past shows that it's not smart to raise the catch allowances immediately, since the sole stock in the North Sea is known to strongly fluctuate. The fishery pressure on the sole stock in the North Sea has decreased since the 1990s, partially due to the reduction in the fishery fleet, which has been stable in the past three years.

  • Farming sole

    It is very difficult to farm sole, but the company Solea in IJmuiden has succeeded. A project was started in Zeeland, called the 'Zeeuws Tong', whereby sole is farmed in troughs.