Eel
Eels are ray-finned fish belonging to the order Anguilliformes (), which consists of eight suborders, 19 families, 111 genera, and about 800 species. Eels undergo considerable development from the early larval stage to the eventual adult stage ...
s are elongated fish, ranging in length from to .
Adults range in weight from 30 grams to over 25 kilograms. They possess no
pelvic fin
Pelvic fins or ventral fins are paired fins located on the ventral surface of fish. The paired pelvic fins are homologous to the hindlimbs of tetrapods.
Structure and function Structure
In actinopterygians, the pelvic fin consists of two en ...
s, and many species also lack
pectoral fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...
s. The
dorsal
Dorsal (from Latin ''dorsum'' ‘back’) may refer to:
* Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism
* Dorsal, positioned on top of an aircraft's fuselage
* Dorsal co ...
and
anal fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...
s are fused with the
caudal
Caudal may refer to:
Anatomy
* Caudal (anatomical term) (from Latin ''cauda''; tail), used to describe how close something is to the trailing end of an organism
* Caudal artery, the portion of the dorsal aorta of a vertebrate that passes into the ...
or tail fin, forming a single ribbon running along much of the length of the animal.
Most eels live in the shallow waters of the
ocean
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the wo ...
and burrow into sand, mud, or amongst rocks. A majority of eel species are nocturnal and thus are rarely seen. Sometimes, they are seen living together in holes, or "eel pits". Some species of eels live in deeper water on the continental shelves and over the slopes deep as . Only members of the family
Anguillidae
The Anguillidae are a family of ray-finned fish that contains the freshwater eels. Eighteen of the 19 extant species and six subspecies in this family are in the genus ''Anguilla''. They are elongated fish with snake-like bodies, their long dorsa ...
regularly inhabit fresh water, but they too return to the sea to breed.
Eel blood is poisonous to humans and other mammals, but both cooking and the digestive process destroy the toxic protein. The toxin derived from eel blood serum was used by
Charles Richet
Charles Robert Richet (25 August 1850 – 4 December 1935) was a French physiologist at the Collège de France known for his pioneering work in immunology. In 1913, he won the Nobel Prize in Physiology or Medicine "in recognition of his work on ...
in his Nobel Prize-winning research, in which Richer discovered
anaphylaxis
Anaphylaxis is a serious, potentially fatal allergic reaction and medical emergency that is rapid in onset and requires immediate medical attention regardless of use of emergency medication on site. It typically causes more than one of the follow ...
by injecting it into dogs and observing the effect.
The Jewish laws of
Kashrut
(also or , ) is a set of dietary laws dealing with the foods that Jewish people are permitted to eat and how those foods must be prepared according to Jewish law. Food that may be consumed is deemed kosher ( in English, yi, כּשר), fro ...
forbid the eating of eels. Similarly, according to the
King James Version
The King James Version (KJV), also the King James Bible (KJB) and the Authorized Version, is an Bible translations into English, English translation of the Christian Bible for the Church of England, which was commissioned in 1604 and publis ...
of the Old Testament, it is acceptable to eat
fin fish
Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life; or more commonly, the site where such enterprise takes place ( a.k.a. fishing ground). Commercial fisheries include wild fisheries and fish farms, bot ...
, but fish like eels are
an abomination and should not be eaten.
Japan consumes more than 70 percent of the global eel catch.
Types of food
Freshwater eels (''
unagi
is the Japanese word for freshwater eel, particularly the Japanese eel, . Unagi is a common ingredient in Japanese cooking, often as ''kabayaki''. It is not to be confused with saltwater eel, which is known as ''anago'' in Japanese.
In ...
'') and marine eels (''
anago
is the Japanese word for salt-water eels, normally referring to ma-anago (''Conger myriaster''). Ma-anago are used for a seafood dish in Japan. They are often simmered (sushi) or deep-fried (tempura), compared to unagi (freshwater eels) which ...
'',
conger eel
''Conger'' ( ) is a genus of marine congrid eels. It includes some of the largest types of eels, ranging up to 2 m (6 ft) or more in length, in the case of the European conger. Large congers have often been observed by divers during t ...
) are commonly used in
Japanese cuisine
Japanese cuisine encompasses the regional and traditional foods of Japan, which have developed through centuries of political, economic, and social changes. The traditional cuisine of Japan (Japanese: ) is based on rice with miso soup and other ...
; foods such as
unadon
is a dish originating in Japan. It consists of a '' donburi'' type large bowl filled with steamed white rice, and topped with fillets of eel (''unagi'') grilled in a style known as ''kabayaki'', similar to teriyaki. The fillets are glazed with a ...
and
unajuu
is a dish originating in Japan. It consists of a ''donburi'' type large bowl filled with steamed white rice, and topped with fillets of eel (''unagi'') grilled in a style known as ''kabayaki'', similar to teriyaki. The fillets are glazed with a ...
are popular but expensive. Eels are also very popular in
Chinese cuisine
Chinese cuisine encompasses the numerous cuisines originating from China, as well as overseas cuisines created by the Chinese diaspora. Because of the Chinese diaspora and historical power of the country, Chinese cuisine has influenced many ot ...
and are prepared in many different ways.
Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
eel prices have often reached 1000
HKD
The Hong Kong dollar (, sign: HK$; code: HKD) is the official currency of the Hong Kong Special Administrative Region. It is subdivided into 100 cents or 1000 mils. The Hong Kong Monetary Authority is the monetary authority of Hong Kong and ...
per kilogram and once exceeded 5000 HKD per kilogram. Eel is also popular in
Korean cuisine
Korean cuisine has evolved through centuries of social and political change. Originating from ancient agricultural and nomadic traditions in Korea and southern Manchuria, Korean cuisine reflects a complex interaction of the natural envi ...
and is seen as a source of stamina for men. The
European eel
The European eel (''Anguilla anguilla'') is a species of eel, a snake-like, catadromous fish. They are normally around and rarely reach more than , but can reach a length of up to in exceptional cases.
Eels have been important sources of fo ...
and other freshwater eels are eaten in
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
, the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, and other places. Traditional east London foods are
jellied eels
Jellied eels are a traditional English dish that originated in the 18th century, primarily in the East End of London. The dish consists of chopped eels boiled in a spiced stock that is allowed to cool and set, forming a jelly. It is usually se ...
and
pie and mash
Pie and mash is a traditional working-class food, originating in the Docks of London. It typically consists of a minced beef pie, mashed potato and a parsley sauce known as liquor. Pie, mash and eel shops have been in London since the 19th centu ...
, although their demand has significantly declined since World War II. In
Italian cuisine
Italian cuisine (, ) is a Mediterranean cuisine#CITEREFDavid1988, David 1988, Introduction, pp.101–103 consisting of the ingredients, recipes and List of cooking techniques, cooking techniques developed across the Italian Peninsula and late ...
eels from the
Valli di Comacchio
The Valli di Comacchio, meaning "fish basins of Comacchio", are a series of contiguous brackish lagoons situated to the south of Comacchio, close to the Adriatic coast of the Emilia-Romagna region in northern Italy. They lie within the comuni of ...
, a swampy zone along the
Adriatic
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...
coast, are especially prized along with freshwater eels of
Bolsena Lake
Lake Bolsena ( it, Lago di Bolsena) is a lake of volcanic origin in the northern part of the province of Viterbo called ''Alto Lazio'' ("Upper Latium") or ''Tuscia'' in central Italy. It is the largest volcanic lake in Europe. Roman historic ...
. Eels are popular in the cuisines of
Northeast India
, native_name_lang = mni
, settlement_type =
, image_skyline =
, image_alt =
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, motto =
, image_map = Northeast india.png
, ...
. Freshwater eels, known as ''Kusia'' in
Assamese, are eaten with curry, often with herbs.
Sustainability and conservation
Eels are a Priority Species under the UK Post-2010 Biodiversity Framework. The European eel (Anguilla anguilla) is listed as Critically Endangered on the global IUCN Red List of Threatened Species. While the Japanese eel (Anguilla japonica) and American eel (Anguilla rostrata) are assessed as Endangered.
In 2010,
Greenpeace International
Greenpeace is an independent global campaigning network, founded in Canada in 1971 by Irving Stowe and Dorothy Stowe, immigrant environmental activists from the United States. Greenpeace states its goal is to "ensure the ability of the Earth to ...
added the
American eel
The American eel (''Anguilla rostrata'') is a facultative catadromous fish found on the eastern coast of North America. Freshwater eels are fish belonging to the elopomorph superorder, a group of phylogenetically ancient teleosts. The America ...
,
European eel
The European eel (''Anguilla anguilla'') is a species of eel, a snake-like, catadromous fish. They are normally around and rarely reach more than , but can reach a length of up to in exceptional cases.
Eels have been important sources of fo ...
, and
Japanese eel
The Japanese eel (''Anguilla japonica''; Japanese: 日本鰻 ''nihon'unagi'') is a species of anguillid eel found in Japan, Korea, China, and Vietnam, as well as the northern Philippines. There are three main species under the Anguilla genus, and ...
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."
The US government deems the commercial eel industry was worth $12 million in Maine in 2017.
History
The eel was a cheap, nutritious and readily available food source for the people of London; European eels were once so common in the
Thames
The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after the R ...
that nets were set as far upriver as London itself, and eels became a
staple for London's poor. The first "Eel Pie & Mash Houses" opened in London in the 18th century, and the oldest surviving shop — M Manze — has been open since 1902.
Gallery
See also
*
Eel life history
The eel is a long, thin bony fish of the order Anguilliformes. The species has a catadromous life cycle, that is: at different stages of development migrating between inland waterways and the deep ocean. Because fishermen never caught anything the ...
*
Pie and mash
Pie and mash is a traditional working-class food, originating in the Docks of London. It typically consists of a minced beef pie, mashed potato and a parsley sauce known as liquor. Pie, mash and eel shops have been in London since the 19th centu ...
References
{{eel topics
Animal-based seafood
Elopomorpha
Commercial fish
Seafood
Fish as food
English cuisine
Japanese cuisine
New Zealand cuisine
Basque cuisine
German cuisine
Dutch cuisine
Czech cuisine
Danish cuisine
Swedish cuisine
Māori cuisine