As a fishing tool, the working principle of fishing net is to catch specific types of fish by selectively releasing . This principle is widely used in fisheries to improve fishing efficiency and protect fishery resources.
Fishing nets are usually made of rope nets, with mesh sizes and mesh shapes designed according to different species of fish. When fishermen want to catch a specific species of fish, they choose the right mesh size and mesh shape to trap the target fish in the Multi-Section Fishing Butterfly Net.
The principle of selective net release is to use the body shape characteristics of fish to determine the mesh size. Different species of fish have different sizes, so the mesh size is determined based on the average body length of the target fish. In general, the mesh size should be larger than the maximum size of the target fish to avoid trapping too small fish in the Multi-Section Fishing Butterfly Net.
Mesh shape is also an important factor in selective mesh placement. Different kinds of fish have different postures and swimming styles when swimming. Fishermen will design the mesh shape according to the swimming characteristics of the target fish in order to better trap it in the net. Some fish swim more straight body, this time suitable for the use of square mesh; Some fish swim in an S-shaped body, which is suitable for diamond mesh.
Once fishermen have chosen the right mesh size and mesh shape, they drop the Multi-Section Fishing Butterfly Net into the water, usually with the help of a fishing boat or boat. When the net is fully open, the fisherman pulls the net boat slowly in order to introduce the target fish into the net. Once the target fish is trapped in the net, the fisherman will quickly lift the net in order to harvest the caught fish.
The application of selective net casting in fishery is of great significance. First, it can help fishermen reduce the amount of non-target fish they catch. By choosing the right mesh size and mesh shape, nets can reduce the catch of too small or non-target fish, thereby reducing the number of fish that slip through the net. This is very important for the protection of fishery resources and ecological enviroment
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