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The use of a cast net may be restricted in some areas when stated by use of sign or authorities. Some government entities in states like Florida state that most shrimp and fish under 8 inches can be caught using, “Cast nets having a stretched mesh size not greater than 1 inch in fresh waters of the state unless specifically prohibited [3].”.
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: 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.
Tangle nets have smaller mesh sizes than standard gillnets. They are designed to catch fish by their nose or jaw, enabling bycatch to be resuscitated and released unharmed. Tangle nets as adapted to the mark-selective fishery for spring Chinook salmon on the lower Columbia River have a standard mesh size of 4 + 1 ⁄ 4 inches (11 cm). Short net ...
Drift netting. 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. [1]
The net is first oriented longitudinally in hot water and then transversally in a ramose. The final result is a net with a lot of tensile strength (between 50 and 70 kg per meter) that weighs between 6 and 9 grams per square meter, and a mesh size that may reach up to 30x30 cm according to the technical capacity of the manufacturer.
[16] The drum seine uses a horizontally mounted drum to haul and store the net instead of a power block. The net is pulled in over a roller, which spans the stern, and then passes through a spooling gear with upright rollers. The spooling gear is moved from side to side across the stern which allows the net to be guided and wound tightly on the ...