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A fishing weir, fish weir, fishgarth [1] or kiddle [2] is an obstruction placed in tidal waters, or wholly or partially across a river, to direct the passage of, or trap fish. A weir may be used to trap marine fish in the intertidal zone as the tide recedes, fish such as salmon as they attempt to swim upstream to breed in a river, or eels as ...
A fish wheel, also known as a salmon wheel, [1] is a device situated in rivers to catch fish which looks and operates like a watermill. However, in addition to paddles, a fish wheel is outfitted with wire baskets designed to catch and carry fish from the water and into a nearby holding tank.
Traditional fish traps, Hà Tây, Vietnam. Cage trap at Lembeh Strait, Indonesia. A fish trap is a trap used for catching fish and other aquatic animals of value. Fish traps include fishing weirs, cage traps, fish wheels and some fishing net rigs such as fyke nets. [1]
Fishing traps – A fish trap is a trap used for fishing. Fish wheel – A fish wheel is a device for catching fish which operates much as a water-powered mill wheel. Fishing weir – A fishing weir, or fish weir, is an obstruction placed in tidal waters or wholly or partially across a river, which is designed to hinder the passage of fish.
Fish may be caught by gillnets in three ways: Wedged – held by the mesh around the body. Gilled – held by mesh slipping behind the opercula. Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh. Most fish have gills. A fish swims into a net and passes only part way through the mesh.
Anadromous – fish that live their adult lives in the ocean but migrate up fresh water rivers to spawn. Examples are Pacific salmon. Fish that migrate in the opposite direction are called catadromous. Anoxic sea water – sea water depleted of oxygen. See hypoxia. Anoxic sediments – sediments depleted of oxygen.
A study of fish caught in shallow water on the Great Barrier Reef showed high survival rates (97%+), [12] for released fish if handled correctly and particularly if caught on artificial baits such as lures. Fish caught on lures are usually hooked cleanly in the mouth, minimizing injury and aiding release.
Putcher fishing is a type of fishing (usually of salmon) which employs multiple putcher baskets, set in a fixed wooden frame, against the tide in a river estuary, notably on the River Severn, in England and South East Wales. Putchers are placed in rows, standing four or five high, in a wooden "rank" set out against the incoming and/or outgoing ...
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