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Fish Harvesting Methods
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Potting
Similar to cage trapping, potting involves traps that lure fish with bait and trap them. Commonly used for species like lobsters and crabs, allowing for the catch to remain alive until retrieval.
Cage Trapping
Using cages or baskets to trap fish, which swim in and cannot escape. Ideal for stationary fishing and can be used in both freshwater and marine environments, especially for crustaceans like crabs and lobsters.
Drift Netting
Uses large nets that drift with the currents to entangle fish by their gills. Mainly used in the open sea, it is sometimes criticized for inadvertently catching non-target species (bycatch).
Fyke Netting
Uses long, bag-shaped nets held open by hoops, with a leader net guiding fish into the trap. This passive method is used in freshwater, estuaries, and protected coastal areas for species like eels and burbot.
Gillnetting
Use of vertical panels of netting that are designed to allow fish heads to pass through the netting but not their bodies, entangling them by their gills. Ideal for species-specific harvests and is typically used in both freshwater and marine environments.
Purse Seine
A large wall of netting is deployed around an entire area or school of fish, with the bottom then being drawn together like a drawstring bag to capture them. It's highly effective for schooling fish such as sardines and tuna.
Spearfishing
Involves using a spear or spear gun to catch individual fish. This practice is often selective, allowing the catching of specific species and sizes, and is common in both freshwater and marine spearfishing.
Cast Netting
Involves throwing a circular net that spreads out and sinks over the fish, then is pulled back to trap them. This ancient method is usually used in shallow waters and is suitable for small to medium-sized fish.
Electrofishing
Using electricity to stun fish before capture. This method is often used for fish population studies in freshwater habitats and should be used with caution due to its potential environmental impacts.
Hand Gathering
Collecting fish by hand, often in shallow waters or in conjunction with traps. It's one of the simplest methods and is used mainly for small scale or subsistence fishing.
Seine Netting
A technique that involves dragging a net with floats at the top edge and weights at the bottom across the bottom or midwater. Usually used in freshwater lakes and rivers to catch species that aggregate near the shore.
Trawling
Involves dragging a fishing net through the water behind one or more boats. Trawling can target different depths and is used extensively for harvesting demersal and pelagic fish species.
Longlining
Consists of deploying a long line with baited hooks at intervals. It's used for capturing fish like tuna and swordfish and can be modified for different depths and conditions.
Dredging
A scoop-like net or dredge is dragged along the sea floor to catch benthic organisms, including shellfish such as oysters, clams, and scallops. This method is often condemned for its disruption of seabed habitats.
Harpoon Fishing
A method where fish are caught using a harpoon, either thrown or shot from a gun. It's highly selective and has minimal bycatch, especially useful for large species like marlin and swordfish.
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