what is main factor of fishing net

The main factors to consider when selecting or evaluating a Fishing Net are:

### 1. Material

- **Nylon**: Known for its strength, elasticity, and durability. Nylon nets are resistant to abrasion and have a longer lifespan but are more expensive.

- **Polyester**: Offers good UV resistance and is less elastic than nylon. Polyester nets are more affordable and provide adequate strength.

- **Polyethylene**: Lightweight and resistant to water absorption, often used for seine nets and trawling.

### 2. Mesh Size

- **Target Species**: The size of the fish being targeted determines the appropriate mesh size. Smaller meshes are used for smaller fish, and larger meshes for bigger fish.

- **Bycatch Reduction**: Mesh size can also be adjusted to reduce the capture of non-target species (bycatch).

### 3. Mesh Shape

- **Diamond Mesh**: Traditional and commonly used, providing flexibility and strength.

- **Square Mesh**: Tends to stay open under tension, which can reduce bycatch and improve fish survival rates when released.

### 4. Twine Thickness

- **Strength and Durability**: Thicker twine offers greater strength and durability but adds weight and can affect the net's performance in the water.

- **Water Resistance**: Thinner twine reduces resistance in the water, making it easier to handle and more efficient for certain fishing methods.

### 5. Netting Technique

- **Knotted Nets**: Traditional method, where knots add extra strength but also bulk and can cause abrasion.

- **Knotless Nets**: Created using Raschel knitting machines, these nets are smooth, reduce damage to the catch, and are often more durable over time.

### 6. Net Design and Configuration

- **Type of Fishing**: Different fishing methods require specific net designs, such as gill nets, trawl nets, seine nets, and cast nets.

- **Length and Depth**: Determined by the fishing location and the species targeted. Deeper nets are used for bottom-dwelling species, while longer nets can cover larger areas.

### 7. Environmental Factors

- **Water Type**: Saltwater or freshwater environments can affect the choice of material due to varying levels of corrosion and biofouling.

- **UV Exposure**: Prolonged exposure to sunlight can degrade some materials, so UV-resistant materials may be preferred for long-term use.

### 8. Legal Regulations

- **Compliance**: Ensure that the net meets local and international fishing regulations regarding mesh size, material, and bycatch reduction measures.

### 9. Cost

- **Budget**: The cost of the net should align with the budget, balancing between initial investment and long-term durability.