Fishing net

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Nylon fishing net with float line attached to small plastic floats A fishing net in Brandon Creek - geograph.org.uk - 921094.jpg
Nylon fishing net with float line attached to small plastic floats

A fishing net is a net used for fishing. Some fishing nets are also called fish traps, for example fyke nets. Fishing nets are usually meshes formed by knotting a relatively thin thread. Early nets were woven from grasses, flaxes and other fibrous plant material. Later cotton was used. Modern nets are usually made of artificial polyamides like nylon, although nets of organic polyamides such as wool or silk thread were common until recently and are still used.

Contents

History

Pieces of the Antrea Net, 8,300 BC, the oldest-known fishing net AntreaNet.jpg
Pieces of the Antrea Net, 8,300 BC, the oldest-known fishing net
A retiarius ("net fighter"), with a trident and cast net, fighting a secutor (mosaic, 4th century BC) Astyanax vs Kalendio mosaic.jpg
A retiarius ("net fighter"), with a trident and cast net, fighting a secutor (mosaic, 4th century BC)
Cucuteni-Trypillian ceramic weights FusaioleCucuteni.JPG
Cucuteni-Trypillian ceramic weights

Fishing nets have been used widely in the past, including by stone age societies. The oldest known fishing net is the net of Antrea, found with other fishing equipment in the Karelian town of Antrea, Finland, in 1913. The net was made from willow, and dates back to 8300 BC. [1] Recently, fishing net sinkers from 27,000 BC were discovered in Korea, making them the oldest fishing implements discovered, to date, in the world. [2] The remnants of another fishing net dates back to the late Mesolithic, and were found together with sinkers at the bottom of a former sea. [3] [4] Some of the oldest rock carvings at Alta (4200–500 BC) have mysterious images, including intricate patterns of horizontal and vertical lines sometimes explained as fishing nets. American Native Indians on the Columbia River wove seine nets from spruce root fibers or wild grass, again using stones as weights. For floats they used sticks made of cedar which moved in a way which frightened the fish and helped keep them together. [5] With the help of large canoes, pre-European Maori deployed seine nets which could be over one thousand metres long. The nets were woven from green flax, with stone weights and light wood or gourd floats, and could require hundreds of men to haul. [6]

Fishing nets are well documented in antiquity. They appear in Egyptian tomb paintings from 3000 BC. In ancient Roman literature, Ovid makes many references to fishing nets, including the use of cork floats and lead weights. [7] [8] [9] Pictorial evidence of Roman fishing comes from mosaics which show nets. [10] In a parody of fishing, a type of gladiator called retiarius was armed with a trident and a cast net. He would fight against a secutor or the murmillo, who carried a short sword and a helmet with the image of a fish on the front. [11] Between 177 and 180 the Greek author Oppian wrote the Halieutica, a didactic poem about fishing. He described various means of fishing including the use of nets cast from boats, scoop nets held open by a hoop, and various traps "which work while their masters sleep". Here is Oppian's description of fishing with a "motionless" net:

The fishers set up very light nets of buoyant flax and wheel in a circle round about while they violently strike the surface of the sea with their oars and make a din with sweeping blow of poles. At the flashing of the swift oars and the noise the fish bound in terror and rush into the bosom of the net which stands at rest, thinking it to be a shelter: foolish fishes which, frightened by a noise, enter the gates of doom. Then the fishers on either side hasten with the ropes to draw the net ashore.

In Norse mythology the sea giantess Rán uses a fishing net to trap lost sailors. References to fishing nets can also be found in the New Testament. [12] Jesus Christ was reputedly a master in the use of fishing nets. The tough, fibrous inner bark of the pawpaw was used by Native Americans and settlers in the Midwest for making ropes and fishing nets. [13] [14] The archaeological site at León Viejo (1524–1610) has fishing net artifacts including fragments of pottery used as weights for fishing nets.[ citation needed ]

Fishing nets have not evolved greatly, and many contemporary fishing nets would be recognized for what they are in Neolithic times. However, the fishing lines from which the nets are constructed have hugely evolved. Fossilised fragments of "probably two-ply laid rope of about 7 mm diameter" have been found in one of the caves at Lascaux, dated about 15,000 BC. [15] Egyptian rope dates back to 4000 to 3500 BC and was generally made of water reed fibers. Other rope in antiquity was made from the fibers of date palms, flax, grass, papyrus, leather, or animal hair. Rope made of hemp fibres was in use in China from about 2800 BC.[ citation needed ]

In modern times, hemp was almost the only material in large scale use in fishing gear until 1900 when it found competition from cotton. By 1950s cotton had taken over a large fraction of fishing nets, although hemp nets were still in use in large quantities. [16] The first nylon fishing nets emerged in Japan in 1949 (although tests of similar equipment were taking place around the world in the last years of the 1940s). In the 1950s they were adopted worldwide, replacing nets made from cotton or hemp that were used before. The introduction of synthetic fibres in fishing gear from around 1950 changed a way of using natural materials that goes back several thousands of years. In the following decades (for example in Norway in 1975, 95% of all fishing gear was made of synthetic fibre), the new synthetic materials conquered the hegemony in net fishing. [16]

Types

TypeImageTarget fishDescriptionEnvironmental impact
Bottom trawl Trawling Drawing.jpg Demersal fish such as groundfish, cod, squid, halibut and rockfish A trawl is a large net, conical in shape, designed to be towed along the sea bottom. The trawl is pulled through the water by one or more boats, called trawlers or draggers. The activity of pulling the trawl through the water is called trawling or dragging.Bottom trawling results in a lot of bycatch and can damage the sea floor. A single pass along the seafloor can remove 5 to 25% of the seabed life. [17] A 2005 report of the UN Millennium Project, commissioned by UN Secretary-General Kofi Annan, recommended the elimination of bottom trawling on the high seas by 2006 to protect seamounts and other ecologically sensitive habitats. In mid-October 2006, US President Bush joined other world leaders calling for a moratorium on deep-sea trawling.
Cast net Payallarfishing.jpg Schooling and other small fishCast nets (throw nets) are small round nets with weights on the edges which are thrown by the fisher. Sizes vary up to about four metres in diameter. The net is thrown by hand in such a manner that it spreads out on the water and sinks. Fish are caught as the net is hauled back in. [18] High discrimination possible. Non targeted fish can be released unharmed.
Coracle net fishing Coracles River Teifi.jpg Coracle fishing is performed by two people, each seated in a coracle, plying their paddle with one hand and holding a shared net with the other. When a fish is caught, each hauls up their end of the net until the two coracles are brought to touch and the fish is secured.
Dragnet Salmon Netting below Paxton House - geograph.org.uk - 216572.jpg This is a general term which can be applied to any net which is dragged or hauled across a river or along the bottom of a lake or sea. An example is the seine net shown in the image. The fishing depth of this net can be adjusted by adding weights to the bottom.
Drift net Gill net hauled in over a power-driven drum.jpg The drift net is a net that is not anchored, but is drifting with the current. It is usually a gill or tangle net, and is commonly used in the coastal waters of many countries. Its use on the high seas is prohibited, but still occurs.
Drive-in netA drive-in net is another fixed net, used by small-scale fishermen in some fisheries in Japan and South Asia, particularly in the Philippines. It is used to catch schooling forage fish such as fusiliers and other reef fish. It is a dustpan-shaped net, resembling a trawl net with long wings. The front part of the net is laid along the seabed. The fishermen either wait until a school swims into the net, or they drive fish into it by creating some sort of commotion. Then the net is closed by lifting the front end so the fish cannot escape. [19]
Fixed gillnet (on stakes) Fishing nets (8377175145).jpg Fixed gillnets [20] are nets for catching fish in shallow intertidal zones. It consists of a sheet of network stretched on stakes fixed into the ground, generally in rivers or where the sea ebbs and flows, for entangling and catching the fish.
Fyke net Fyke net in a museum.jpg Fyke nets are bag-shaped nets which are held open by hoops. These can be linked together in long chains, and are used to catch eels in rivers. If fyke nets are equipped with wings and leaders, they can also be used in sheltered places in lakes where there is plenty of plant life. Hundreds of these nets can be connected into systems where it is not practical to build large traps. [21] It is similar to putcher fishing.
Gillnet Eilif Peterssen-Laksefiskeren (1889).jpg Sardines, salmon, cod The gillnet catches fish which try to pass through it by snagging on the gill covers. Thus trapped, the fish can neither advance through the net nor retreat. Uses a system of nets with floats and weights. The nets are anchored to the sea floor and allowed to float at the surfaceAnimals cannot see the net, so they swim into it and are tangled. High risk of bycatch.
Ghost net Turtle entangled in marine debris (ghost net).jpg Ghost nets are nets that have been lost at sea. They may continue to be a menace to marine life for many years.
Haaf net Haaf Net Fishermen, Solway Estuary - geograph.org.uk - 612827.jpg Salmon The haaf net is set in a rectangular wooden frame usually about four or five metres long and two metres wide supported by three legs. A central pole extends from one of the longer edges at a right angle. The fisherman wades into deep water and submerges the net, holding it upright with the central pole. When a fish swims into the net the fisherman tilts the pole backwards to scoop the net upwards, thereby trapping the fish. [22] [23]
Hand net FraserRiverSalmonFishing.jpg Hand nets, also called scoop or dip nets, are held open by a hoop and may be attached to a short or a long stiff handle. They have been known since antiquity and can be used for sweeping up fish near the water surface like muskellunge and northern pike. When such a net is used by an angler to help land a fish, it is a landing net. [24] In England, hand netting is the only legal way of catching eels and has been practised for thousands of years on the Rivers Parrett and Severn.
Landing net Net.gsfc.jpg Landing nets are large handheld nets that are used to lift caught fish out of the water, most commonly in angling and fly fishing. Landing nets are commonly used for large fish such as the common carp.
Lave net Lave net.jpg A special form of large hand net is the lave net, now used in very few locations on the River Severn in England and Wales. The lave net is set in the water and the fisherman waits till he feels a fish hit against the mesh and the net is then lifted. Fish as large as sturgeon are caught in lave nets. [25]
Lift net Thookku Valai.jpg A lift net has an opening which faces upwards. The net is first submerged to a desired depth, and then lifted or hauled from the water. It can be lifted either manually (hand lift net) or mechanically (shore-operated lift net), and can be operated on a boat (boat-operated lift net) [26]
Midwater trawl Pelagisches Schleppnetz.jpg Pelagic fish such as anchovies, shrimp, tuna and mackerel In midwater trawling a cone-shaped net is towed behind a single boat and spread by trawl doors (image), or it can be towed behind two boats (pair trawling) which act as the spreading device.Midwater trawling is relatively benign compared to the damage bottom trawling can inflict on the sea bottom.
Plankton net Planktonnetzbgar.jpg Plankton Research vessels collect plankton from the ocean using fine mesh plankton nets. The vessels either tow the nets through the sea or pump sea water onboard and then pass it through the net. [27]
Purse seine Purse seine illustration, Historic American Engineering Record.png Schooling fish The purse seine, widely used by commercial fishermen, is an evolution of the surround net, which in turn is an evolution of the seine net. A large net is used to surround fish, typically an entire fish school, on all sides. The bottom of the net is then closed by pulling a line arranged like a drawstring used to close the mouth of a purse. This completely traps the fish.Higher chance of bycatch
Push net Banks shrimper.jpg Shrimp A push net is a "small triangular fishing net with a rigid frame that is pushed along the bottom in shallow waters and is used in parts of the southwestern Pacific for taking shrimps and small bottom-dwelling fishes". [28]
Seine net Seining for wild fish.jpg A seine is a large fishing net that may be arranged in a number of different ways. In purse seine fishing the net hangs vertically in the water by attaching weights along the bottom edge and floats along the top. A simple and commonly used fishing technique is with beach seine, where the seine net is operated from the shore. Danish seine is a method which has some similarities with trawling. In the UK seine netting for Salmon and Sea-trout in coastal waters is only permitted in a very few locations and where it is permitted one end of the seine must remain fixed and the other end is then waded out and returns to the fixed point. This variant is called Wade netting and is strictly controlled by law. [29]
Shore-operated lift net Kochi chinese fishing-net-20080215-01a.jpg Pelagic speciesThese are held horizontally by a large fixed structure and periodically lowered into the water. Huge mechanical contrivances hold out horizontal nets with diameters of twenty metres or more. The nets are dipped into the water and raised again, but otherwise cannot be moved. The nets may hold bait or be fitted with lights to attract more fish. [30] [31] The most famous examples are found at Kochi, India, where they are known as Chinese fishing nets (Cheena vala). Despite this name, this technique is used all over the world. They are also widely used on the Atlantic coast of France, where they are operated from small huts built over the water on stilts, known as carrelets, and on the Adriatic coast of Italy as trabucco .
Surrounding net Salmon purse seining.jpg A surrounding net surrounds fish on all sides. It is an evolution of the seine, and is typically used by commercial fishers. [32]
Tangle net Tangle Net.jpg Tangle nets, also known as tooth nets, are similar to gillnets except they have a smaller mesh size designed to catch fish by the teeth or upper jaw bone instead of by the gills. [33]
Trammel FMIB 36608 Trammel Net 2.jpg Demersal species, fish and crustaceans.A trammel is a fishing net with three layers of netting that is used to entangle fish or crustacea. [34] A slack central layer with a small mesh is sandwiched between two taut outer layers with a much larger mesh. The net is kept vertical by the floats on the headrope and weights on the bottomrope. Floats can be small, cylindrical or egg-shaped, solid and plastic. They are attached on the head rope while weights made up of lead are distributed along the ground rope. [34] Fisher can lose these net. This can result in "ghost fishing", with associated loss of marine animals continuing for the remaining life of the net. The net also capture of small sized organisms and non-target species. Such impact can be regulated by using larger meshes. However, compared to gillnets the selectivity of trammel nets are lower and catches of small organisms and non-target species are common.

Fishing lines

Ropes and lines are made of fibre lengths, twisted or braided together to provide tensile strength. They are used for pulling, but not for pushing. The availability of reliable and durable ropes and lines has had many consequences for the development and utility of fishing nets, and influences particularly the scale at which the nets can be deployed. [35]

Floats

A Japanese glass fishing float Large Glass Fishing Float with Net 1.JPG
A Japanese glass fishing float

Some types of fishing nets, like seine and trammel, need to be kept hanging vertically in the water by means of floats at the top. Various light "corkwood"-type woods have been used around the world as fishing floats. Floats come in different sizes and shapes. These days they are often brightly coloured so they are easy to see.

Weights and anchors

The Cucuteni–Trypillia culture, c.5500 BC to 2750 BC in Eastern Europe, created ceramic weights in various shapes and sizes which were used as loom weights when weaving, and also were attached to fishing nets. [39]

Despite their ornamental value, dog conches are traditionally used by local fishermen as sinkers for their fishing nets. [40] [41]

Production

Syrian refugee in Lebanon manually manufacturing from her home a fishing net intended for sale "The training is good, it's great. It helps us to learn and to earn a living" (11173845336).jpg
Syrian refugee in Lebanon manually manufacturing from her home a fishing net intended for sale

Fishing nets are usually manufactured on industrial looms, though traditional methods are still used where the nets are woven by hand and assembled in home or cottage industries.[ citation needed ]

Environmental impact

Fisheries often use large-scale nets that are indiscriminate and catch whatever comes along; sea turtle, dolphin, or shark. Bycatch is a large contributor to sea turtle deaths. [43] Longline, trawl, [44] and gillnet fishing are three types of fishing with the most sea turtle accidents. Deaths occur often because of drowning, where the sea turtle was ensnared and could not come up for air. [45] Cubs of endangered Saimaa ringed seal also drown to fishing nets. [46]

Fishing nets, usually made of plastic, can be left or lost in the ocean by fishermen. Known as ghost nets, these entangle fish, whales, dolphins, sea turtles, sharks, dugongs, crocodiles, seabirds, crabs, and other creatures, restricting movement, causing starvation, laceration and infection, and, in those that need to return to the surface to breathe, suffocation. [47]

Miscellany

Scuba diver's net cutter Aa scuba netcutter.jpg
Scuba diver's net cutter

Divers may become trapped in fishing nets; monofilament is almost invisible underwater. Divers often carry a net cutter. This is a small handheld tool carried by scuba divers to extricate themselves if trapped by a fishing net or fishing line. It has a small sharp blade such as a replaceable scalpel blade inside the small notch. There is a small hole at the other end to for a lanyard to tether the cutter to the diver.[ citation needed ]

See also

Notes

  1. Miettinen, Arto; Sarmaja-Korjonen, Kaarina; Sonninen, Eloni; Junger, Högne; Lempiäinen, Terttu; Ylikoski, Kirsi; Mäkiaho, Jari-Pekka; Carpelan, Christian; Jungner, Högne (2008). "The palaeoenvironment of the Antrea Net Find". Karelian Isthmus. Finnish Antiquarian Society: 71–87. ISBN   9789519057682.
  2. "Cast from the past: World's oldest fishing net sinkers found in South Korea". m.phys.org.
  3. Kriiska, Aivar (1996) "Stone age settlements in the lower reaches of the Narva River, north-eastern Estonia" Coastal Estonia: Recent Advances in Environmental and Cultural History. PACT 51. Rixensart. Pages 359–369.
  4. Indreko R (1932) "Kiviaja võrgujäänuste leid Narvas" (Stone Age find of fishing net remnants), in Eesti Rahva Muuseumi Aastaraamat VII, Tartu, pp. 48–67 (in Estonian).
  5. Smith, Courtland L Seine fishing Oregon Encyclopedia. Retrieved 23 March 2012.
  6. Meredith, Paul "Te hī ika – Māori fishing" Te Ara - the Encyclopedia of New Zealand. Updated 2 March 2009.
  7. Radcliffe W (1926) Fishing from the Earliest Times John Murray, London.
  8. Johnson WM and Lavigne DM (1999) Monk Seals in Antiquity [ dead link ] Fisheries, pp. 48–54. Netherlands Commission for International Nature Protection.
  9. Gilroy, Clinton G (1845) "The history of silk, cotton, linen, wool, and other fibrous substances: including observations on spinning, dyeing and weaving" pp. 455–464. Harper & Brothers, Harvard University.
  10. Image of fishing illustrated in a Roman mosaic Archived 2011-07-17 at the Wayback Machine .
  11. Auguet, Roland [1970] (1994). Cruelty and Civilization: The Roman Games. London: Routledge. ISBN   0-415-10452-1.
  12. Luke 5:4-6; John 21:3-7a
  13. Werthner, William B. (1935). Some American Trees: An intimate study of native Ohio trees. New York: The Macmillan Company. pp. xviii + 398 pp.
  14. Bilton, Kathy. "Pawpaws: A paw for you and a paw for me" . Retrieved 21 July 2011.
  15. J.C. Turner and P. van de Griend (ed.), The History and Science of Knots (Singapore: World Scientific, 1996), 14.
  16. 1 2 Martinussen, Atle Ove (2006) "Nylon Fever: Technological Innovation, Diffusion and Control in Norwegian Fishery during the 1950s" MAST, 5(1): 29–44.
  17. "Australia State of the Environment Report 2001 - Coasts and Oceans Theme Report: Fisheries (Impacts of wild fish harvesting activity)". Archived from the original on 2006-09-09. Retrieved 2012-05-12.
  18. Casting net Archived 2021-02-27 at the Wayback Machine .
  19. Gabriel, Otto; Andres von Brandt (2005). Fish Catching Methods of the World. Blackwell. ISBN   0-85238-280-4.
  20. FAO, Fishing Gear Types : Fixed Gillnets (on stakes), Fisheries and Aquaculture Department, 2011
  21. fyke net (2008) In Encyclopædia Britannica. Retrieved December 24, 2008, from Encyclopædia Britannica Online.
  22. Scott, Allen J. (2014). Solway Country: Land, Life and Livelihood in the Western Border Region of England and Scotland. Cambridge Scholars Publishing. pp. 76–77. ISBN   978-1-4438-7140-2.
  23. Peters, Jonathan (21 January 2020). "Fight to save 1,000-year-old fishing technique". BBC News. Retrieved 22 January 2020.
  24. Fishing Tools - Landing Nets Archived 2008-09-15 at the Wayback Machine
  25. "Lave Net Fishing". severnsideforum.co.uk. Archived from the original on 2010-03-25. Retrieved 2010-07-08.
  26. FAO, Lift net Fishing Gear Types. Retrieved 12 October 2013.
  27. Ichthyoplankton sampling methods Southwest Fisheries Science Center, NOAA . Modified 3 September 2007. Retrieved 29 July 2011.
  28. Commission of the European Communities, Multilingual dictionary of fishing gear Archived 2016-04-30 at the Wayback Machine , 2nd edition, 1992 (n° 3247 p.[183]205).
  29. studio, TalkTalk web. "TalkTalk Webspace is closing soon!!". web.onetel.net.uk.
  30. Commission of the European Communities, Multilingual dictionary of fishing gear Archived 2016-04-30 at the Wayback Machine , 2nd edition, 1992 (n° 3062 p.[56]78).
  31. "FAO Fisheries & Aquaculture - Fishing gear type". www.fao.org.
  32. "MONOGRAPH". map.seafdec.org.
  33. Selective Fishing Methods Archived 2018-02-14 at the Wayback Machine Washington Department of Fish and Wildlife. Retrieved 13 November 2011.
  34. 1 2 "Fishing Gear Types: Trammel nets", Food and Agriculture Organization of the United Nations, retrieved 2010-09-27
  35. Hansen, Viveka (6 October 2022) Fishing nets and lines, IK Foundation.
  36. 1 2 Wild Singapore - Berembang Sonneratia caseolaris
  37. Jones, Benjamin L.; Unsworth, Richard K. F. (2019-11-11). "The perverse fisheries consequences of mosquito net malaria prophylaxis in East Africa". Ambio. 49 (7): 1257–1267. doi: 10.1007/s13280-019-01280-0 . ISSN   1654-7209. PMC   7190679 . PMID   31709492.
  38. "Erythrina sandwicensis (Fabaceae)". Meet the Plants. National Tropical Botanical Garden . Retrieved 2009-01-31.
  39. Prehistoric textiles: the development of cloth in the Neolithic and Bronze By E.J.W. Barber
  40. Poutiers, J. M. (1998). "Gastropods" (PDF). In Carpenter, K. E. (ed.). The living marine resources of the Western Central Pacific. Rome: Food and Agriculture Organization of the United Nations (FAO). p. 471. ISBN   92-5-104051-6.[ permanent dead link ]
  41. Purchon, R. D. & Purchon D. E. A. (1981). "The marine shelled Mollusca of West Malaysia and Singapore. Part I. General introduction and account of the collecting stations". Journal of Molluscan Studies47: 290–312.
  42. "Fishing nets for a future: helping Syrian women in Lebanon". YouTube . Archived from the original on 2015-08-28. Retrieved 2015-04-08.
  43. Stokstad, Erik. "Sea Turtles Suffer Collateral Damage From Fishing." Science AAAS 07 Apr 2010: n. pag. Web. 8 Dec 2010. "Sea Turtles Suffer Collateral Damage from Fishing - ScienceNOW". Archived from the original on 2012-03-10. Retrieved 2012-05-12.
  44. Sasso, Christopher, and Sheryan Epperly. "Seasonal sea turtle mortality risk from forced submergence in bottom trawls." Fisheries Research 81.1 (2006): 86-88. Web. 15 Dec 2010.
  45. Haas, Heather, Erin LaCasella, Robin LeRoux, Henry Miliken, and Brett Hayward. "Characteristics of sea turtles incidentally captured in the U.S. Atlantic sea scallop dredge fishery." Fisheries Research 93.3 (2008): 289-295. Web. 15 Dec 2010.
  46. "Finnish conservationists worry about Saimaa ringed seal as fishing net ban ends". Eye On The Arctic. July 2020.
  47. "'Ghost fishing' killing seabirds". BBC News. 28 June 2007. Retrieved 2008-04-01.

Related Research Articles

<span class="mw-page-title-main">Fishing</span> Activity of trying to catch fish

Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment, but may also be caught from stocked bodies of water such as ponds, canals, park wetlands and reservoirs. Fishing techniques include hand-gathering, spearing, netting, angling, shooting and trapping, as well as more destructive and often illegal techniques such as electrocution, blasting and poisoning.

<span class="mw-page-title-main">Angling</span> Fishing technique

Angling is a fishing technique that uses a fish hook attached to a fishing line to tether individual fish in the mouth. The fishing line is usually manipulated via a fishing rod, although rodless techniques such as handlining also exist. Modern angling rods are usually fitted with a fishing reel that functions as a cranking device for storing, retrieving and releasing out the line, although Tenkara fishing and traditional cane pole fishing are two rod-angling methods that do not use any reel. The fish hook itself can be additionally weighted with a denser tackle called a sinker, and is typically dressed with an appetizing bait to attract and entice the fish into swallowing the hook, but sometimes an inedible fake/imitation bait with multiple attached hooks is used instead of a single hook with edible bait. Some type of bite indicator, such as a float, a bell or a quiver tip, is often used to relay underwater status of the hook to the surface and alert the angler of a fish's presence.

<span class="mw-page-title-main">Longline fishing</span> Commercial fishing technique

Longline fishing, or longlining, is a commercial fishing angling technique that uses a long main line with baited hooks attached at intervals via short branch lines called snoods or gangions. A snood is attached to the main line using a clip or swivel, with the hook at the other end. Longlines are classified mainly by where they are placed in the water column. This can be at the surface or at the bottom. Lines can also be set by means of an anchor, or left to drift. Hundreds or even thousands of baited hooks can hang from a single line. This can lead to many deaths of different marine species. Longliners – fishing vessels rigged for longlining – commonly target swordfish, tuna, halibut, sablefish and many other species.

<span class="mw-page-title-main">Bycatch</span> Fish or other marine species that is caught unintentionally

Bycatch, in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juveniles of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting. Non-marine species that are caught but regarded as generally "undesirable" are referred to as rough fish or coarse fish.

<span class="mw-page-title-main">Gillnetting</span> Type of fishing net

Gillnetting is a fishing method that uses gillnets: vertical panels of netting that hang from a line with regularly spaced floaters that hold the line on the surface of the water. The floats are sometimes called "corks" and the line with corks is generally referred to as a "cork line." The line along the bottom of the panels is generally weighted. Traditionally this line has been weighted with lead and may be referred to as "lead line." A gillnet is normally set in a straight line. Gillnets can be characterized by mesh size, as well as colour and type of filament from which they are made. Fish may be caught by gillnets in three ways:

  1. Wedged – held by the mesh around the body.
  2. Gilled – held by mesh slipping behind the opercula.
  3. Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh.
<span class="mw-page-title-main">Commercial fishing</span> Catching seafood for commercial profit

Commercial fishing is the activity of catching fish and other seafood for commercial profit, mostly from wild fisheries. It provides a large quantity of food to many countries around the world, but those who practice it as an industry must often pursue fish far into the ocean under adverse conditions. Large-scale commercial fishing is also known as industrial fishing.

<span class="mw-page-title-main">Seine fishing</span> Method of fishing with a net

Seine fishing is a method of fishing that employs a surrounding net, called a seine, that hangs vertically in the water with its bottom edge held down by weights and its top edge buoyed by floats. Seine nets can be deployed from the shore as a beach seine, or from a boat.

<span class="mw-page-title-main">Turtle excluder device</span> Device for freeing sea turtles from bycatch

A turtle excluder device (TED) is a specialized device that allows a captured sea turtle to escape when caught in a fisherman's net.

<span class="mw-page-title-main">Ghost net</span> Fishing net left or lost in the sea, that endangers marine animals or human divers

Ghost nets are fishing nets that have been abandoned, lost, or otherwise discarded in the ocean, lakes, and rivers. These nets, often nearly invisible in the dim light, can be left tangled on a rocky reef or drifting in the open sea. They can entangle fish, dolphins, sea turtles, sharks, dugongs, crocodiles, seabirds, crabs, and other creatures, including the occasional human diver. Acting as designed, the nets restrict movement, causing starvation, laceration and infection, and suffocation in those that need to return to the surface to breathe. It's estimated that around 48,000 tons of ghost nets are generated each year, and these may linger in the oceans for a considerable time before breaking-up.

<span class="mw-page-title-main">Drift netting</span> Fishing technique

Drift netting is a fishing technique where nets, called drift nets, hang vertically in the water column without being anchored to the bottom. The nets are kept vertical in the water by floats attached to a rope along the top of the net and weights attached to another rope along the bottom of the net. Drift nets generally rely on the entanglement properties of loosely affixed netting. Folds of loose netting, much like a window drapery, snag on a fish's tail and fins and wrap the fish up in loose netting as it struggles to escape. However, the nets can also function as gill nets if fish are captured when their gills get stuck in the net. The size of the mesh varies depending on the fish being targeted. These nets usually target schools of pelagic fish.

<span class="mw-page-title-main">Artisanal fishing</span> Traditional labor-intensive fishing

Artisanal fishing consists of various small-scale, low-technology, low-capital, fishing practices undertaken by individual fishing households. Many of these households are of coastal or island ethnic groups. These households make short fishing trips close to the shore. Their produce is usually not processed and is mainly for local consumption. Artisan fishing uses traditional fishing techniques such as rod and tackle, fishing arrows and harpoons, cast nets, and small traditional fishing boats. For that reason, socio-economic status of artisanal fishing community has become an interest of the authorities in recent years.

<span class="mw-page-title-main">Fishing tackle</span> Equipment used for fishing

Fishing tackle is the equipment used by anglers when fishing. Almost any equipment or gear used in fishing can be called fishing tackle, examples being hooks, lines, baits/lures, rods, reels, floats, sinkers/feeders, nets, spears, gaffs and traps, as well as wires, snaps, beads, spoons, blades, spinners, clevises and tools that make it easy to tie knots.

<span class="mw-page-title-main">Fishing vessel</span> Boat or ship used to catch fish

A fishing vessel is a boat or ship used to catch fish and other valuable nektonic aquatic animals in the sea, lake or river. Humans have used different kinds of surface vessels in commercial, artisanal and recreational fishing.

<span class="mw-page-title-main">Fishing techniques</span> Methods for catching sea creatures, especially fish

Fishing techniques are methods for catching fish. The term may also be applied to methods for catching other aquatic animals such as molluscs and edible marine invertebrates.

<span class="mw-page-title-main">History of fishing</span> Aspect of history

Fishing is a prehistoric practice dating back at least 70,000 years. Since the 16th century, fishing vessels have been able to cross oceans in pursuit of fish, and since the 19th century it has been possible to use larger vessels and in some cases process the fish on board. Fish are normally caught in the wild. Techniques for catching fish include hand gathering, spearing, netting, angling and trapping.

<span class="mw-page-title-main">Fishing in Uganda</span>

There are two major sources of fish in Uganda; one is from aquaculture, the other from fishing in rivers and lakes. The latter has made up the largest and most significant share of all fishing. Open water covers 15.3 percent of Uganda's surface and comprises five major lakes which are the main sources of fish in the country. Lake Victoria continues to be the most important water body in Uganda both in size and contribution to the total fish catch, followed by Lake Albert and Lake Kyoga.

This is a glossary of terms used in fisheries, fisheries management and fisheries science.

<span class="mw-page-title-main">Tangle net</span> Type of nylon fishing net

Similar to a gillnet, the tangle net, or tooth net, is a type of nylon fishing net. Left in the water for no more than two days, and allowing bycatch to be released alive, this net is considered to be less harmful that other nets. The tangle net is used in the Philippines by commercial fishermen, as well as by the scientific community. When spent, these nets can be bundled, and left on the sea floor to collect smaller species. These bundles are known locally as lumen lumen nets.

The Hawaii longline fishery is managed under Western Pacific Regional Fishery Management Council’s (WPRFMC's) Pelagics Fisheries Ecosystem Plan. Through this plan, the WPRFMC has introduced logbooks, observers, vessel monitoring systems, fishing gear modifications and spatial management for the Hawaii longline fishery. Until relatively recently, the main driver for management of the Hawaii longline fishery has been bycatch and not fishery resources.

<span class="mw-page-title-main">Fishing gear and methods used in Uganda</span> Caught with plank canoes and fiberglass boats

Fishing gear and methods used in Uganda are both modern and traditional. Fish in Uganda are caught mostly with plank canoes and to a lesser extent, fiberglass boats. Some dugout canoes are also still being used. The plank canoes are generally 4–12 m (13.12–39.37 ft) in length and dugout canoes average 3.5 m (11.48 ft). The total number of vessels is about 17,000 and about 20% of these are motorized. Artisanal fishermen use various gear including gillnets, seines and hook and line. In a number of localities, traditional methods including baskets, traps and mosquito nets continue to be used. The gear commonly used includes gillnets, lift nets, scoop-nets used in light fishing; hook and line gear and fish traps.

References