How to Choose the Right Fishing Net Mesh Size
1. What Is Fishing Net Mesh Size?
Mesh size refers to the dimensions of the openings in a fishing net. However, mesh measurements are not always expressed in the same way.
Common measurement methods include stretched mesh size, measured between opposite knots with the mesh fully extended, and bar length, measured along one side of the mesh opening.
These measurements are different. For example, a mesh with a stretched mesh size of 100 mm has a nominal bar length of approximately 50 mm when the mesh is symmetrical.
When requesting a quotation, buyers should always clarify the measurement method to avoid ordering a net with the wrong specifications.
2. How Does Mesh Size Affect Fishing?
Mesh size influences which fish can be retained by a net, although the actual result also depends on fish shape, behavior, net material, twine diameter, and how the net is used.
In gillnet fishing, fish may become caught when their bodies pass into the mesh opening but cannot pass through completely. Mesh size therefore plays an important role in the size selectivity of the net.
In other fishing methods, such as trawling, mesh size can influence the escape of smaller fish and the retention of the target catch.
The relationship between mesh size and catch is not determined by mesh dimensions alone. Net design and fishing conditions must also be considered.
3. What Factors Should Be Considered?
Target Species
Different fish species have different body shapes and sizes. A suitable mesh size for one species may not be appropriate for another.
Buyers should identify the target species and, where possible, provide the expected fish size range.
Fishing Method
Gillnets, trawl nets, purse seines, and aquaculture nets have different functions. The appropriate mesh size depends on how the net captures or contains fish.
For example, gillnets rely heavily on mesh selectivity, while trawl nets must also consider catch retention and the escape of smaller fish.
Twine Diameter
Twine diameter affects the strength, weight, and overall openness of the netting. A thicker twine can change the effective opening and water resistance, even when the nominal mesh size remains the same.
Fishing Regulations
Many fisheries have legal requirements for minimum mesh sizes, particularly for certain target species and fishing methods. Buyers should confirm the regulations that apply to their intended fishing area before placing an order.
4. How to Specify Mesh Size When Ordering
To avoid confusion, buyers should provide more than a single mesh measurement.
A useful specification should include:
Mesh size and measurement method
Net material, such as nylon or PE
Twine diameter or denier
Knotted or knotless construction
Net length and depth
Target species and fishing method
Required quantity and color
If the buyer has an existing net, a clear photograph and accurate measurements can help clarify the required construction. However, photographs alone may not be sufficient to determine the exact twine diameter or mesh size.
5. Common Mistakes When Choosing Mesh Size
One common mistake is comparing mesh sizes without checking how they are measured. A bar-length specification and a stretched-mesh specification are not interchangeable.
Another mistake is selecting mesh size without considering twine diameter or net material. These factors influence the finished net and its working characteristics.
Buyers should also avoid assuming that a larger mesh always produces a better catch or that a smaller mesh is suitable for every target species. The correct choice depends on the fishing method, intended catch, and applicable regulations.
Conclusion
Choosing the right fishing net mesh size requires more than selecting a number. Buyers need to consider the target species, fishing method, measurement standard, twine diameter, material, and local regulations.
QinHo supplies fishing nets in various mesh sizes, materials, and constructions for commercial fishing applications. Providing clear specifications and intended-use information helps ensure that the selected net is suitable for the required operation.