Knotless mesh protects the fish
Knotless netting is gentle on skin and scales, strong for its weight — the right construction for live-fish duty.
Fishing Nets
Knotless nylon and HDPE aquaculture netting covers cage liners, seine and harvest nets, and cast nets, in mesh sizes graded from fingerling to grow-out. SIGMA supplies gill nets for sale, fish farm nets for cage culture and pond harvest, and commercial fish farming net solutions sourced direct from our own production line. UV treatment and rot resistance extend outdoor service life, and cage liner nets are made to your cage dimensions for a straight-swap re-netting.
- MaterialKnotless nylon (PA) / HDPE / PE
- Mesh~8–40 mm graded
- TreatmentUV + rot-resistant
- TypesCage liner · seine · cast
ISO 9001 CE OEM / ODM
15+ years in aquaculture engineering · Trusted by Japfa Group, Japan Nissui & Tropo Farms · Shipped worldwide in one container
Product Description
Mesh Size: 10mm-1000mm
Knot Type: double knot
Selvage: Single selvage,double selvage or others
Color: As your requirement
Depth: As your requirement
Length: As your requirement
Setting: Depthwise stretch setting, lengthwise stretch setting, or others
Advantage:
Made From High-Quality PA Nylon Raw material, Durable Line, and High Strength.
Advanced equipment to guarantee high quality.
High-efficiency Production to reduce the delivery time
High quality, competitive price, efficient service
Video of Product
Application
Package and Shipment
Our range covers fish netting material in monofilament net and multifilament constructions, including commercial fish netting, fish net cloth and knotless netting for hatcheries. Specialised types include beach seine net, trammel net, prawn drag net, surrounding net, eel net, spawning net and floating net with net floats. We also supply pond fish net for harvest and stock management. Contact us with your mesh size, depth and quantity for a factory-direct quote.
Specifications
Models & configuration
Materials and mesh ranges are the standard production options — every net is made to size, mesh and material per order.
| Model | Capacity | Typical use | Core configuration |
|---|---|---|---|
| SIGMA-NET-CAGE | Mesh sized to fish | Cage netting | Knotless nylon / HDPE, optional bird / predator net |
| SIGMA-NET-SEINE | Large-area drag net | Harvest seine | Knotless nylon, reinforced head/foot rope + lead line |
| SIGMA-NET-CAST | Cast net | Daily harvesting | Nylon / PE monofilament + lead weights |
| SIGMA-NET-GRADE | Fine-mesh nursery / grading net | Fry & grading | Fine-mesh knotless nylon |
| Net types | Cage liner nets / seine (harvest) nets / cast nets / dip & grading nets |
|---|---|
| Material | Knotless nylon (PA) / HDPE / PE monofilament |
| Mesh size | Fingerling ~8–15 mm · grow-out 20–40 mm (by species and stock size) |
| Treatment | UV-treated, rot- and mildew-resistant for long outdoor life |
| Edges | Rope-bordered top/bottom lines, lead-line weighting as required |
| Colours | Black / green / blue (common) |
| Water type | Freshwater / seawater |
| Options | Cage-liner nets made to cage size, predator/bird nets, fine-mesh fry netting |
System composition
UV-treated for long outdoor life
UV and anti-rot treatment gives long service in fresh and salt water, season after season.
Mesh graded to the stock
Fine mesh for fry and fingerlings, larger mesh for grow-out — specified by species and size.
Every net job covered
Cage liners, seine/harvest nets, cast nets and dip/grading nets from one production line.
Made to your cage size
Own production builds liner nets to round or square cage dimensions, so re-netting is a straight swap.
One source with your cages
Produced alongside SIGMA's floating cages and feeders — re-net cages and replace harvest gear from the same manufacturer.
Application
- Cage liner nets for floating cages (re-netting and replacement)
- Seine / harvest nets for draining and harvesting ponds
- Dip and grading nets for sorting and transferring stock
- Cast nets for sampling and capture
- Predator and bird protection covers
Video
Fishing Nets
FAQ
Frequently asked questions
What types of nets does SIGMA make?
Knotless nylon and HDPE nets for cage liner nets, seine / harvest nets, and cast / drag nets, in graded mesh sizes from fingerling to grow-out.
Why use knotless netting?
Knotless mesh is gentle on fish skin and scales, strong for its weight, and UV-treated and rot-resistant for long outdoor life in fresh and salt water.
How is the net mesh sized?
Mesh is graded by stock size — fine mesh for fry and fingerlings, larger mesh for grow-out — and edges are rope-bordered and weighted as required.
Can nets be made to fit my cages?
Yes — netting is produced by size, mesh and material to order, alongside the floating-cage line so a farm can re-net cages and replace harvest gear from the same manufacturer.
What types of gill nets does SIGMA supply, and what do they cost?
Gill nets for sale from SIGMA include monofilament gill nets for sale in nylon or PE, in mesh sizes matched to target species size. Commercial gill nets for sale are supplied in long panel lengths with rope top-line and lead foot-line for pond or reservoir deployment. Fish farming net price depends on material, mesh opening, thread count and panel dimensions — contact us with your target species and panel size for a landed price.
What is the difference between fish farming net and aquaculture netting?
Fish farming net typically refers to cage liner nets — the net pen suspended inside a floating cage that confines the fish. Aquaculture netting is the broader category: cage liners, seine / harvest nets, cast nets, dip nets and predator covers, all produced in UV-treated knotless nylon or HDPE. Fish farm nets ordered from SIGMA are made to your cage or pond dimensions with the mesh size graded to your species and stock size.
Do you supply a catfish net, shrimp trawl net, and gill nets for commercial fishing?
Yes — beyond cage and pond nets, SIGMA supplies a catfish net for pond harvest and grading, shrimp catching nets and shrimp drag/seine nets for pond and estuary harvest, and gill nets (set gill net, small-gauge gill net, surface gill net) for open-water and reservoir fishing. All are cut from the same knotless nylon/HDPE stock, in mesh and panel sizes matched to your target species.
Related equipment
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HDPE floating fish cages & net pens for lakes, reservoirs & sea farming — durable frames, wave-resistant floats, custom sizes. Factory-direct from SIGMA. Get a quote.
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Feeding machines
Automatic & smart fish-feeding machines for ponds, cages & RAS — programmable timing, even broadcast, saves labor & feed. Multiple capacities from SIGMA. Get a quote.
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Fish Shrimp Feed
High-protein floating & sinking feed for tilapia, shrimp & carp — optimized FCR, stable in water, full size range. Bulk aquafeed supply from SIGMA. Request details & a quote.
View details →Request a tailored quote
Tell us your species, target density and site — our engineers size the system and reply within one business day.
Fishing Nets Request a Quote