Fishing gear: net fishing head gills of the net called what fishing nets

The most common is the set single piece gill net.

Assembled from a single piece of net clothing, rope, float, sinker, etc. into a rectangular net gear with the same mesh size, is the main form of gillnet. Nets are generally 10 to 50 meters long, 1 to 6 meters high, mesh size and shape must be compatible with the fish section circumference, shape.

The main factor affecting the catching performance of gillnets is the mesh size, followed by the thickness of the net line, the tension of the net line and the color of the net.

Mesh size

Fish spikes into the net, can be bound by the mesh, decided by the mesh circumference and fish body circumference is compatible. Mesh too large fish easy to escape, too small is not easy to pierce. General fish body shape is fusiform, mesh can be bound to the fish body parts from the gill cover to the dorsal fin between the front of any fish section, mesh perimeter can not be smaller or larger than the perimeter of this section of the fish body, otherwise it can not be effective fishing. Therefore, the mesh size should be determined according to the size range of the object to be caught.

The thickness of the mesh line

After the fish stabbed into the mesh, its caudal fins swing fiercely to generate thrust, attempting to pass through the mesh, thus generating compression force between the mesh and the fish body section. When the mesh gradually slides toward the back of the fish, the compression force will make it tighter and tighter to bind a section of the fish body, until the net line embedded in the fish body no longer slides backward. Thick and hard line is easy to be found by the fish, and easy to slide, it is difficult to embed the fish body. Therefore, under the condition of ensuring sufficient strength of the net line, the more detailed the net line the better the catching performance.

Net tension

Fishing due to the role of floating, sinking force, each net line are subject to tension. The greater the tension, the easier the fish feel the presence of the net and escape. Therefore, in addition to the requirements of the net line is also required to be thin and soft, which is particularly important for the gillnet to entangle the main. In addition can also be appropriate to reduce the buoyancy, sinking force or add a number of vertical strings, so that the net coat is loose and soft, to enhance the performance of entanglement.

Net color

Gillnet catch performance with the fish's vision, the brightness of natural light and water transparency has a close relationship. In the natural light brightness and water transparency of the environment operation, the color of the gillnet can generally choose a light color, and vice versa, the choice of darker colors, in order to avoid fish find or produce alarm. In the absence of natural light at night, the color of the gillnet has no effect on its catch performance.