Fishing techniques includehand-gathering,spearfishing,netting,angling andtrapping.Recreational,commercial andartisanal fishers use different techniques, and also, sometimes, the same techniques. Recreational fishers fish for pleasure or sport, while commercial fishers fish for profit. Artisanal fishers use traditional, low-tech methods, for survival indeveloping countries, and as a cultural heritage in other countries. Mostly, recreational fishers use angling methods and commercial fishers use netting methods.
There is an intricate link between various fishing techniques and knowledge about the fish and their behaviour includingmigration,foraging andhabitat. The effective use of fishing techniques often depends on this additional knowledge.[1] Which techniques are appropriate is dictated mainly by the target species and by its habitat.[2]
Fishing techniques can be contrasted withfishing tackle. Fishing tackle refers to the physical equipment that is used when fishing, whereas fishing techniques refers to the manner in which the tackle is used when fishing.
It is possible to harvest many sea foods with minimal equipment by using the hands. Gatheringseafood by hand can be as easy as pickingshellfish orkelp up off thebeach, or doing some digging forclams orcrabs. The earliest evidence for shellfish gathering dates back to a 300,000-year-old site in France calledTerra Amata. This is ahominid site asmodernHomo sapiens did not appear in Europe until around 50,000 years ago.[3][4]
Flounder tramping - Every August, the smallScottish village ofPalnackie hosts the world flounder tramping championships where flounder are captured by stepping on them.
Noodling: Practiced in the United States, mostly in theSouth. The noodler places his hand inside acatfish hole. If all goes as planned, the catfish swims forward and latches onto the noodler's hand, and can then be dragged out of the hole, albeit with risk of injury to the noodler.[5]
Trout binning - A method of taking trout. Rocks in a rocky stream are struck with asledgehammer. The force of the blow stuns the fish.[7]
Trout tickling - In the British Isles, the practice of catchingtrout by hand is known as trout tickling; it is an art mentioned several times in the plays ofShakespeare.[8]
Spearfishing is an ancient method of fishing conducted with an ordinaryspear or a specialized variant such as aharpoon,trident,arrow or eel spear.[9][10] Some fishing spears useslings (or rubber loops) to propel the spear.
Gigging - uses small trident type spears with long handles for giggingbullfrogs with a bright light at night, or for giggingsuckers and otherrough fish in shallow water. Gigging is popular in theAmerican South andMidwest.
Hawaiian slings - have a sling separate from the spear, in the manner of an underwater bow and arrow.
Harpoons - A spearfishing technique that was widely used not just for river, pond, lake or stream fishing; it was used also for whaling in open oceans. Evidence has been found of harpoons made out of bone in Brazil that are 5000 years old that may have been used to go hunt whales from the Arctic.[11]
Modern spearguns - traditional spearfishing is restricted to shallow waters, but the development of the speargun has made the method much more efficient. With practice, divers are able to hold their breath for up to four minutes and sometimes longer. Of course, a diver withunderwater breathing equipment can dive for much longer periods.
Tridents - are three-pronged spears. They are also called leisters or gigs. They are used for spear fishing and were formerly also a military weapon. They feature widely in early mythology and history.
Fishing nets aremeshes usually formed by knotting a relatively thin thread. About 180 AD the Greek authorOppian wrote theHalieutica, 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".
A fisherman casting a net inKerala, IndiaOil painting of gillnetting,The salmon fisher by Eilif PeterssenPesca con el Sarambao (1847), a painting ofsalambáw fishermen in thePhilippines
Cast nets - are round nets with smallweights distributed around the edge. They are also calledthrow nets. The net iscast or 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.[12] This simple device has been in use, with various modifications, for thousands of years.
Drift nets - are nets which are not anchored. They are usually gillnets, and are commonly used in the coastal waters of many countries. Their use on thehigh seas is prohibited, but still occurs.
Ghost nets - are nets that have been lost at sea. They can be a menace to marine life for many years.
Gillnets - catch fish which try to pass through by snagging on the gill covers. Trapped, the fish can neither advance through the net nor retreat.
Haaf nets - mainly used in theSolway Firth forming part of the border betweenEngland andScotland. Brought toGreat Britain by theVikings a thousand years ago, the technique involves the fisherman wading out to deep waters with a large rectangular net and waiting forsalmon to swim into it. The fish is then scooped up by the raising of the net.
Hand nets - are small nets held open by a hoop. They have been used since antiquity. They are also called scoop nets, and are used for scooping up fish near the surface of the water. They may or may not have a handle–if they have a long handle they are calleddip nets. When used by anglers to help land fish they are calledlanding nets.[13] Because hand netting is not destructive to fish, hand nets are used fortag and release, or capturingaquarium fish.
Lift nets - are a method of fishing using nets that are submerged to a certain depth and then lifted out of the water vertically. The nets can be flat or shaped like a bag, a rectangle, a pyramid, or a cone. Lift nets can be hand-operated, boat-operated, or shore-operated. They typically use bait or alight-source as a fish-attractor.[14]
Cheena vala - are shore operated lift nets fromIndia.[15] 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. Its name means "Chinese fishing net", though it originates fromSoutheast Asia.
Salambaw - a type of traditional raft or barge-operated large lift nets from thePhilippines. It utilizes a tall upright pole or a tower structure (timba) around 15 to 20 m (49 to 66 ft) in height. At the top of the pole are two large curving spars crossed with each other. A large square net is attached to the ends of these spars. The pole acts as acrane, it can be tilted to submerge the net using a weighted lever mechanism. The operator either pushes or pulls the lever, or climbs on it to bring it down with their body weight, thus raising the pole. A variation of the salambaw operated from largeoutrigger boats is known asbasnigan.[16]
Seine nets - are large fishing nets that can be arranged in different ways. Inpurse seining fishing the net hangs vertically in the water by attaching weights along the bottom edge and floats along the top.Danish seining is a method which has some similarities withtrawling. A simple and commonly used fishing technique is beach seining, where the seine net is operated from the shore.
Tangle nets - also known astooth 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.[17]
Trawl nets - are large nets, conical in shape, designed to be towed in the sea or along the sea bottom. The trawl is pulled through the water by one or more boats, calledtrawlers. The activity of pulling the trawl through the water is called trawling.
Angling is a method of fishing by means of an "angle" (fish hook). The hook is attached to aline, and is sometimes weighed down by asinker so it sinks deeper in the water. This is the classic "hook, line and sinker" arrangement, used in angling since prehistoric times. The hook is usually dressed withlures orbaits such asearthworm,doughball andbait fish.
Additional arrangements include the use of afishing rod, which can be fitted with areel, and functions as a delivery mechanism forcasting the line. Other delivery methods for projecting the line include fishing kites and cannons, kontiki rafts and remote controlled devices.Floats can also be used to help set the line or function asbite indicators. The hook can be dressed withlures orbait. Angling is the principal method ofsport fishing, butcommercial fisheries also use angling methods involving multiple hooks, such aslonglining or commercialtrolling.
Line fishing is fishing with afishing line, but not using rods. A fishing line is any cord made for fishing. Important parameters of a fishing line are its length, material, and weight (thicker, sturdier lines are more visible to fish). Factors that may determine what line an angler chooses for a given fishing environment include breakingstrength, knot strength, UV resistance, castability, limpness, stretch, abrasion resistance, and visibility.
Modern fishing lines are usually made from artificial substances. The most common type ismonofilament, made of a single strand. There are alsobraided fishing lines and thermally fusedsuperlines.
Droplining - a dropline consists of a longfishing line set vertically down into the water, with a series ofbaitedhooks. Droplines have aweight at the bottom and afloat at the top. They are not usually as long as longlines and have fewer hooks.
Handlining - is fishing with a single fishing line, baited withlures orbait fish, which is held in the hands. Handlining can be done from boats or from the shore. It is used mainly to catchgroundfish andsquid, but smallerpelagic fish can also be caught.
Pahila - is a traditional method of shorelinetrolling in thePhilippines. It uniquely uses baited hooks tied to a laterally flattened float calledpalyaw shaped like a smalloutrigger boat, acatamaran, or a fish. A long line is attached to the float. It is set unto the water's edge and dragged by someone running or walking along the beach. The combination of the water resistance and the diagonal pull forces the float outwards into deeper waters, like akite. Once it reaches its maximum line length, it moves rapidly parallel to the person pulling it along the beach. It is pulled back to the shore intermittently to check for catches. Pahila literally means "pulled". It is also calledsubid-subid,sibid-sibid,paguyod,pahinas, hilada, orsaliwsiw, among other names, in otherPhilippine languages.[18][19][20]
Jiggerpole - is a method of fishing for bass. It is built on using a cane pole with the line of at least 30lb. test, tied well down at the pole of about three quarters length in the typical cane pole manner, and then securely at the tip with about a foot to foot and a half length to drop in the water. Place a swivel on the end of the line. The trick is to linger the lure in a specific area going back and forth, maneuvering the tip of the cane pole in the water causing a noise to attract a bass to see a jig getting after a ripple of water the pole tip is causing.
Jigging - is the practice of fishing with a jig, a type of fishing lure. A jig consists of a lead sinker with a hook molded into it and usually covered by a soft body to attract fish. Jigs are intended to create a jerky, vertical motion, as opposed to spinnerbaits which move through the water horizontally.
Longlining - is a commercial technique that uses a long heavy fishing line with a series of hundreds or even thousands ofbaitedhooks hanging from the main line by means of branch lines called "snoods". Longlines are usually operated from specialised boats called longliners. They use a special winch to haul in the line, and can operate in deeper waters targetingpelagic species such asswordfish,tuna,halibut andsablefish.
Deadline[21]- is the practice of leaving the baited line without a rod (usually over night) and returning for the fish later.
Slab
Slabbing: is abass fishing technique, that involves repetitively lifting and dropping a flat lure, usually made of 1 to 2.5 oz of lead painted to look like abaitfish (or heavy slabs of metal), through aschool of actively feeding fish that the angler has located on afishfinder. Used onwhite andstriped bass in the reservoirs of the southern USA.
Trolling - is fishing with one or more baited lines which are drawn through the water. This may be done by pulling the line behind a slow moving boat, or by slowly winding the line in when fishing from the land. Trolling is used to catch pelagic fish such asmackerel andkingfish.
Trotlining - a trotline is like a dropline, except that a dropline has a series of hooks suspended vertically in the water, while a trotline has a series of hooks suspended horizontally in the water. Trotlines can be physically set in many ways, such as tying each end to something fixed, and adjusting the set of the rest of the line withweights andfloats. They are used for catching crabs or fish, such as catfish, particularly across rivers.
Angling with a rod.Extreme rock fishing offMuriwai Beach, New ZealandAn angler in his float tube plays a hooked pike.
Angling withfishing rods give more control of the fishing line, and allows thebait/lure to be launched much farther than hand-throwing can reach. The rod is usually fitted with afishing reel which functions as a mechanism for storing, retrieving and paying out the line.Floats may also be used, and can function asbite indicators. The hook can be dressed with lures or baits.
Bank fishing - fishing fromriver banks and similar shorelines. Bank fishing is usually performed with a fishing rod and reel, although nets, traps, and spears can also be used. People who fish from a boat can sometimes access more areas in prime locations with greater ease than bank fishermen. However, many people do not own boats and find fishing from the bank has its own advantages. Bank fishing has its own requirements, and many things come into play for success, such as local knowledge, water depth, bank structure, location, time of day, and the type of bait and lures.
Casting - the act of throwing the fishing line out over the water using a flexible fishing rod. The usual technique is for the angler to quickly flick the rod from behind toward the water.[22] Casting is also a sport adjunct tofishing, much asshooting is tohunting. The sport is supervised by the International Casting Sport Federation, which sponsors tournaments and recognizes world records for accuracy and distance. Some variations of the technique exist, such asSurf fishing, theReach cast, andSpey casting.
Float tubes - small doughnut-shaped boats with an underwater seat in the "hole". Float tubes are used for fly fishing and enable the angler to reach deeper water without splashing and disturbing stillwater fish.
Fly fishing - the use ofartificial flies as lures. These are cast with specially constructedfly rods and fly lines. The fly line (today, almost always coated with plastic) is heavy enough cast in order to send the fly to the target. Artificial flies vary dramatically in size, weight and colour. Fly fishing is a distinct and ancient angling method, most renowned as a method for catchingtrout andsalmon, but employed today for a wide variety of species includingpike,bass,panfish, andcarp, as well asmarine species, such asredfish,snook,tarpon,bonefish andstriped bass. There is a growing population of anglers whose aim is to catch as many different species as possible with the fly.
Tenkara fishing - Tenkara is a form of fly fishing that originated in Japan over 200 years ago. It was originally done with a bamboo pole between 12' and 20' with the line tied directly on the tip of the rod requiring no reel. Modern tenkara rods are usually made of graphite and are telescopic. Unlike western style fly fishing tenkara uses either a tapered line or a level line and forgoes the PVC coated fly fishing line. Typical target species includetrout andchar but most smaller freshwater species can be caught by this method.
Rock fishing - fishing from rocky outcrops into the sea. It is a popular pastime in Australia and New Zealand. It can be a dangerous pastime and claims many lives each year.
Pitch Fishing - also known as “pitching” or “pitch fishing,” is a technique designed to deliver the lure quietly and at a distance over the water. The lure will fly high and far out over the water, landing in a loud splash. Pitch fishing involves sending the lure out a lower angle, and thus making a smaller splash but still loud as noted in the previous sentence, which will hopefully not scare the fish.[23]
Surfcasting - fishing from ashoreline using a rod to cast into thesurf. With few exceptions, surf fishing is done insaltwater, often from abeach. The basic idea of most surfcasting is to cast abait orlure as far out into the water as is necessary to reach the target fish from the shore. This may or may not require long casting distances and muscular techniques. Basic surf fishing can be done with asurfcasting rod between seven and twelve feet long, with an extended butt section, equipped with an appropriate spinning or conventional castingreel. Dedicated surfcasters usually possess an array of terminal and other tackle, with rods and reels of different lengths and actions, and lures and baits of different weights and capabilities. Depending on fishing conditions and the fish they are targeting, such surfcasters tailor bait and terminal tackle to rod and reel and the size and species of the fish. Reels and other equipment need to be constructed so they resist the corrosive and abrasive effects of salt and sand.
Bottom fishing - is fishing the bottom of a body of water. In the United Kingdom it is called "ledgering". A common rig for fishing on the bottom is a weight tied to the end of the line, with a hook about an inch up line from the weight. The method can be used both with hand lines and rods. There are fishing rods specialized for bottom fishing, called "donkas". The weight is used to cast or throw the line an appropriate distance. Bottom fishing can be done both from boats and from the land. It targetsgroundfish such assucker fish,bream,catfish, andcrappie.
Ice fishing - is the practice of catching fish with lines and hooks through an opening in the ice on a frozen body of water. It is practised byhunter-gatherers such as theInuit and by anglers in other cold or continental climates.
Kayak fishing - has a long history, and has gained popularity in recent times. Many of the techniques used are the same as those used on other fishing boats, apart from difference is in the set-up, how each piece of equipment is fitted to the kayak, and how each activity is carried out on such a small craft.
Kite fishing has long been used in China and by the people ofNew Guinea and otherPacific Islands. Kites can provide the fishermen access to waters that would otherwise be available only with boats. Similarly, for boat owners, kites provide a way to fish in areas where it is not safe to navigate such as shallows or coral reefs where fish may be plentiful. Kites can also be used for trolling a lure through the water. Suitable kites may be of very simple construction. Those ofTobi Island are a large leaf stiffened by the ribs of the fronds of the coconut palm. The fishing line may be made from coconut fibre and the lure made from spiders webs.[24] Modern kitefishing is popular in New Zealand, where large delta kites of synthetic materials are used to fish from beaches,[25] taking a line and hooks far out past the breakers. Kite fishing is also emerging inMelbourne where sled kites are becoming popular, both off beaches and off boats and in freshwater areas. The disabled community are increasingly using the kites for fishing as they allow mobility impaired people to cast the bait further out than they would otherwise be able to.
Kontiki Fishing - is the practice of using either a Kontiki sailing raft, or a modern motorised torpedo device to pull a longline (up to 25 hooks) from the beach up to two thousand metres offshore. This method of fishing is very popular on the surf beaches of New Zealand. The electric kontikis can also be used to pull surfcasting lines and baits offshore, before releasing them to fish. Modern electric kontikis use electric trolling motors, lithium batteries and GPS controlled autopilots, and electric winches are used to retrieve the line, hooks and kontiki back to shore.
Boat anglers - Fishing is usually done either from a boat or from a shoreline or river bank. When fishing from a boat, pretty much any fishing technique can be used, from nets to fish traps, but some form of angling is by far the most common. Compared to fishing from the land, fishing from a boat allows more access to different fishing grounds and different species of fish. Sometackle is specialised for boat anglers, such assea rods.
Remote control fishing - Fishing can also be done using aremote controlled boat. This type of fishing is commonly referred to asRC fishing. The boat is usually one to three feet long and runs on a small DC battery. Aradio transmitter controls the boat. The fisherman connects the fishing line/bait to the boat; drives it; navigating the water by manipulating theremote controller. The technique is growing in popularity.
Drone fishing - Rod fishing assisted by a drone, the drone can be a flying type or underwater type, it can be remote controlled by a human, computer, AI or a combination of the three simultaneously. The drone is used to scout for fish via camera, carry the hook to a far off location, cast the hook, reel in the fish and return. The degree of assistance is adjustable based on the model and configuration of drone used. This technique can be used to catch fish normally requiring a boat. Several US states, including Michigan and Oregon, have banned fishing with drones.[26]
Fishermen with traditional fish traps,Hà Tây,VietnamA typical wooden fish wheelLobster pots on the beach atBeer, Devon
Traps are culturally almost universal and seem to have been independently invented many times. There are essentially two types of trap, a permanent or semi-permanent structure placed in a river or tidal area and pot-traps that are baited to attract prey and periodically lifted.
Artisanal techniques
Dam fishing - Anartisanal technique calleddam fishing is used by theBaka pygmies. This involves the construction of a temporary dam resulting in a drop in the water levels downstream—allowing fish to be easily collected.[27]
Basket weir fish traps - were widely used in ancient times. They are shown in medieval illustrations and surviving examples have been found. Basket weirs are about 2 m long and comprise two wicker cones, one inside the other—easy to get into and hard to get out.[28]
Fishing weir - Inmedieval Europe, large fishing weir structures were constructed from wood posts and wattle fences. V-shaped structures in rivers could be as long as 60 metres and worked by directing fish towards fish traps or nets. Such fish traps were evidently controversial in medieval England.Magna Carta includes a clause requiring that they be removed:"All fish-weirs shall be removed from the Thames, the Medway, and throughout the whole of England, except on the sea coast".[29]
Fish wheels - operate alongside streams, much as a water-powered mill wheel. A wheel complete with baskets and paddles is attached to a floating dock. The wheel rotates due to the current of the stream. The baskets on the wheel capture fish travelling upstream and transfer them into a holding tank. When the holding tank is full, the fish are removed.
Lobster traps - also called lobster pots, are traps used to catch lobsters. They resemble fish traps, yet are usually smaller and consist of several sections. Lobster traps are also used to catch othercrustaceans, such ascrabs andcrayfish. They can be constructed in various shapes, but the design strategy is to make the entry into the trap much easier than exit. The pots are baited and lowered into the water and checked frequently. Historically lobster pots were constructed with wood or metal. Today most traps are made from checkered wire and mesh. It is common for the trap to be weighted down with bricks. A bait bag is hung in the middle of the trap. In theory the lobster walks up the mesh and then falls into the wire trap.Bait varies from captain to captain but it is common to use herring. In commercial lobstering five to ten of these traps will be connected with line. A buoy marks each end of the string of pots. Two buoys are important to make retrieval easier and so captains do not set their traps over each other. Each buoy is painted differently so the various captains can identify their traps.
Cooperative human-dolphin fisheries date back to theancient Roman author andnatural philosopherPliny the Elder.[30] A modern human-dolphin fishery still takes place inLaguna,Santa Catarina, Brazil and a few other places in the world. In Laguna, men stand in shallow waters of the lagoon, or sit in canoes, forming a line, and waiting for the dolphins to appear. One or more resident dolphins drives fish towards the waiting fishermen. Then at a critical moment when the dolphins are close enough to the fishermen, one dolphin emerges from the water for an average duration of 1.4 seconds,[31] performing a unique sequence of movements not otherwise seen in the wild. This sequence serves as a signal to the fishermen to cast their throw nets. The dolphins then feed off the fish that manage to escape the nets.[32][33] In this unique form of fishing, the dolphins gain because the fish are disoriented and because the fish cannot escape to shallow waters where the larger dolphins cannot reach them. Likewise, studies show that fishermen casting their nets following the unique signal catch more fish than when fishing alone, without the involvement of the dolphins.[34]
Cormorant fishing - In China and Japan, the practice ofcormorant fishing is thought to date back some 1300 years. Fishermen use the natural fish-hunting instincts of the cormorants to catch fish, but a metal ring placed round the bird's neck prevents large, valuable fish from being swallowed. The fish are instead collected by the fisherman.[35]
Frigatebirds fishing - The people ofNauru used trainedfrigatebirds to fish on reefs.
Portuguese Water Dogs - Dating from the 16th century in Portugal, Portuguese Water Dogs were used by fishermen to send messages between boats, to retrieve fish and articles from the water, and to guard the fishing boats.Labrador Retrievers have been used by fishermen to assist in bringing nets to shore; the dog would grab the floating corks on the ends of the nets and pull them to shore.
Remora fishing - The practice of tethering aremora, a sucking fish, to a fishing line and using the remora to capture sea turtles probably originated in the Indian Ocean. The earliest surviving records of the practice are Peter Martyr d'Anghera's 1511 accounts of the second voyage of Columbus to the New World (1494).[36] However, these accounts are probably apocryphal, and based on earlier, no longer extant accounts from the Indian Ocean region.
Scientists carrying out a population and species survey using electrofishing equipmentA laksegiljer in Osterfjord, Norway
Basnig - a traditional method of fishing in thePhilippines that combines the use of bag nets and attracting fish with high-powered lamps. Specialized outrigger boats known asbasnigan are used.
Electrofishing - is another recently developed technique, primarily used in freshwater byfisheries scientists. Electrofishing uses electricity to stun fish so they can be caught. It is commonly used in scientific surveys, samplingfish populations for abundance, density, andspecies composition. When performed correctly, electrofishing results in no permanent harm to fish, which return to their natural state a few minutes after being stunned.
Lampuki nets - are an example of a traditionalartisanal use of nets. SinceRoman times,Maltese fishers have cut the larger, lowerfronds frompalm trees which they then weave into large flat rafts. The rafts are pulled out to sea by aluzzu, a small traditionalfishing boat. In the middle of the day, lampuki fish (the Maltese name formahi-mahi) school underneath the rafts, seeking the shade, and are caught by the fishers using large mesh nets.
Dredging - There are types of dredges used for collectingscallops,oysters orsea cucumbers from the seabed. They have the form of a scoop made of chain mesh and they are towed by a fishing boat. Dredging can be destructive to the seabed, because the marine life is unable to survive the weight of the dredge. It is extremely detrimental tocoral beds since they take centuries to rebuild themselves. Unmonitored dredging can be compared to unmonitored forest clearing, where it can wipe out ecosystems. Nowadays, this method of fishing is often replaced bymariculture or by scuba diving.
Fish finders - are electronicsonar devices which indicate the presence of fish and fish schools. They are widely used by recreational fishermen. Commercially, they are used with other electronic locating and positioning devices.
Fishing light attractors - use lights attached (above or underwater) to some structure to attract fish andbait fish. Fishing light attractor are operated every night. After a while, fish discover the increased concentration of bait surrounding the light. Once located, the fish return regularly, and can be harvested.
Flossing - also called bottom bouncing. A method of angling usually used forsalmon. It uses a hook and bait attached to a weighted bouncer dragged along the bottom of a stream or river.
Harvesting machines - have recently been developed for commercial fishing. Harvesting machines use pumps to pump fish out of the sea. Dredges have also been mechanized so that they directly transfer mollusks to the surface as are dredged.
Payaos - a type of fish aggregating device used inSoutheast Asia, particularly in thePhilippines. Payaos were traditionally bamboo rafts forhandline fishing before World War II, but modernsteel payaos usefish lights andfish location sonar to increase yields. While payaos fishing issustainable on a small scale, the large scale, modern applications have been linked to adverse impacts onfish stocks.
Shrimp baiting - is a method used by recreational fisherman for of catchingshrimp. It uses acast net,bait and long poles. The poles are used to mark a specific location and then bait is thrown in the water near the pole. After several minutes the cast net is thrown as close to the bait as possible and shrimp are caught in the net. In the 1980s the sport became popular in the southeastern coastal states of the US.
Snagging, also known as snatching, jagging (inAustralian English) or foul hooking, uses large, sharp, multi-pointed hooks tethered by a fishing line to pierce and grapple the fish externally. This is achieved by pulling the line out of the water very rapidly as soon as any movement is felt on the line, with the intention of impaling the hook point directly through the fish's skin and "clawing" firmly into the flesh like agaff.[37][38]
Laksegiljer - small cabins standing on stilts where a fisherman sits. This method of fishing entails a net where the opening is controlled by a line tied to a rock. Under the cabin on the seabed is a white plank. When a salmon swims across the plank, the fisherman sees it and throws the rock into the water so the line closes the opening of the net, trapping the salmon. InNorway this method of fishing is banned, but in Osterfjord locals can obtain a special permit to use this method in order to maintain the old traditions.
Destructive fishing practices are practices that easily result in irreversible damage to aquatic habitats and ecosystems. Many fishing techniques can be destructive if used inappropriately, but some practices are particularly likely to result in irreversible damage. These practices are mostly, though not always, illegal. Where they are illegal, they are often inadequately enforced. Some examples are:
Dynamite orblast fishing is done easily and cheaply withdynamite orhomemade bombs made from locally available materials. Fish are killed by the shock from the blast and are then skimmed from the surface or collected from the bottom. The explosions indiscriminately kill large numbers of fish and other marine organisms in the vicinity and can damage or destroy the physical environment. Explosions are particularly harmful to coral reefs.[39] Blast fishing is also illegal in many waterways around the world.
Bottom trawling istrawling (towing atrawl, which is afishing net) along the sea floor. It is also referred to as "dragging". The scientific community divides bottom trawling intobenthic trawling anddemersal trawling. Benthic trawling is towing a net at the very bottom of the ocean and demersal trawling is towing a net just above the benthic zone. Bottom trawling targets both bottom-living fish (groundfish) and semi-pelagic species such ascod,squid,shrimp, androckfish.
Bottom fishing has operated for over a century on heavily fished grounds such as theNorth Sea andGrand Banks. Whileoverfishing has long been recognised as causing major ecological changes to the fish community on the Grand Banks, concern has been raised more recently about the damage which benthic trawling inflicts upon seabed communities.[40] A species of particular concern is the slow growing, deep watercoralLophelia pertusa. This species is home to a diverse community of deep sea organisms, but is easily damaged by fishing gear. On 17 November 2004, theUnited Nations General Assembly urged nations to consider temporary bans on high seas bottom trawling.[41]
Cyanide fishing is a method of collecting live fish mainly for use inaquariums, which involves spraying asodium cyanide mixture into the desired fish's habitat in order to stun the fish. The practice hurts not only the target population, but also many other marine organisms, includingcoral and thuscoral reefs.
Recent studies have shown that the combination of cyanide use and stress of post capture handling results in mortality of up to 75% of the organisms within less than 48 hours of capture. With such high mortality numbers, a greater number of fish must be caught in order to offset post-catch death.
Muro-ami is a destructive artisan fishing method employed on coral reefs in Southeast Asia, traditionally in Myanmar. An encircling net is used with pounding devices, such as large stones fitted on ropes that are pounded onto the coral reefs. They can also consist of large heavy blocks of cement suspended above the sea by a crane fitted to the vessel. The pounding devices are repeatedly lowered into the area encircled by the net, smashing the coral into small fragments in order to scare the fish out of their coral refuges. The "crushing" effect on the coral heads has been described as having long-lasting and practically totally destructive effects.[42]
Ancient remains ofspears,hooks andfish net have been found in ruins of theStone Age. The people of the early civilization drew pictures of nets and fishing lines in their arts (Parker 2002). Early hooks were made from the upper bills ofeagles and from bones, shells, horns and plant thorns. Spears were tipped with the same materials, or sometimes with flints. Lines and nets were made from leaves, plant stalk and cocoon silk. Literature on theindigenous fishing practices is very scanty. Baines (1992) documented traditional fisheries in theSolomon Islands. Use of the herbal fish poisons in catching fishes from fresh water and sea documented fromNew Caledonia (Dahl 1985). John (1998) documented fishing techniques and overall life style of the Mukkuvar fishing Community ofKanyakumari district ofTamil Nadu, India. Tribal people using various plants for medicinal and various purposes (Rai et al. 2000; Singh et al. 1997; Lin 2005) extends the use notion for herbal fish stupefying plants. Use of the fish poisons is very old practice in the history of human kind. In 1212, King Frederick II prohibited the use of certain plantpiscicides, and by the 15th century similar laws had been decreed in other European countries as well (Wilhelm 1974). All over the globe, indigenous people use various fish poisons to kill the fishes, documented in America (Jeremy 2002) and amongTarahumara Indian (Gajdusek 1954).
^Dr. Moti Nissani (2007)Bottlenose Dolphins in Laguna Requesting a Throw Net (video). Supporting material for Dr. Nissani's presentation at the 2007 International Ethological Conference. Video retrieved February 13, 2008.
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Pelagic longline
