Common sole

The common sole, Dover sole, or black sole (Solea solea) is a species of flatfish in the family Soleidae. It lives on the sandy or muddy seabed of the northern Atlantic and the Mediterranean Sea where it often semi-immerses itself in the substrate. The upper side is greyish-brown while the underside is white. It grows to a maximum length of about 70 cm (28 in). The species is prized as a food fish, being caught mostly by trawling on the seabed.

Common sole
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Pleuronectiformes
Family: Soleidae
Genus: Solea
Species:
S. solea
Binomial name
Solea solea
Synonyms
  • Pleuronectes solea Linnaeus, 1758
  • Solea vulgaris Quensel, 1806
"Slip" fried in butter is popular in Dutch cuisine

Description

The small eyes are close to each other on the right side of the body. This gives the fish the possibility of lurking half-buried in the sand for passing prey. The common sole, just like all other flatfishes, hatches as an "ordinary" fish with one eye on each side of the body. The young metamorphose to flatfish when they are about one centimeter long. The upper side is greyish-brown and the underside is white. The common sole approaches a maximum length of 70 cm (28 in).

Distribution and habitat

It has a preference for relatively shallow water with sand or mud covering the bottom. It is found in the Eastern Atlantic Ocean, from the south of Norway to Senegal, and in almost all of the Mediterranean Sea. In the winter, it withdraws to the somewhat warmer waters of the southern North Sea.[2] In the UK, a small sole is commercially called a "slip".

Ecology

An ectoparasite of the common sole is the leech Hemibdella soleae. The larvae settle on the upper surface of the fish, the only part not buried in the sediment, and after further development migrate to the underside, where they attach themselves with their suckers, feeding on the fish's blood.[3]

Cuisine

Chefs prize Dover sole for its mild, buttery, sweet flavour and versatility, and for its ease of filleting. The fish yields fillets that hold together well in a variety of recipes.[4]

The name "Dover" comes from Dover, the English fishing port landing the most sole in the 19th century.

In 2010, Greenpeace International added the common sole to its seafood red list. "The Greenpeace International seafood red list is a list of fish that are commonly sold in supermarkets around the world, and which have a very high risk of being sourced from unsustainable fisheries."[5][6]

Other species named "Dover sole"

Because of its prestige, the name "Dover sole" was borrowed to name the eastern Pacific species Microstomus pacificus, a quite distinct species with different culinary properties: the Pacific sole has thinner, less firm fillets and sells for a lower price.

Semialbino sole from the North Sea

References
  1. Tous, P.; Sidibe, A.; Mbye, E.; et al. (2015). "Solea solea". IUCN Red List of Threatened Species. 2015: e.T198739A15595369. doi:10.2305/IUCN.UK.2015-4.RLTS.T198739A15595369.en. Downloaded on 28 March 2018.
  2. Froese, Rainer and Pauly, Daniel, eds. (2008). "Solea solea" in FishBase. October 2008 version.
  3. Kearne, G.C. (2009). "The life cycle of the monogenean Entobdella soleae, a skin parasite of the common sole". Parasitology. 53 (1–2): 253–263. doi:10.1017/S0031182000072723.
  4. "Sea Log" (PDF). Santa Monica Seafood. 1 January 2006. Archived (PDF) from the original on 30 September 2007. Retrieved 22 March 2009.
  5. "Greenpeace International Seafood Red list – Greenpeace International". greenpeace.org. 24 December 2008. Archived from the original on 24 December 2008. Retrieved 4 February 2018.
  6. Greenpeace Seafood Red list Archived 2 July 2017 at the Wayback Machine, Greenpeace, 2014
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