Fish Cages & Survey Gill Nets

Our range of Fish Cages, Survey Nets and Gill Nets delivers robust, high-performance solutions for fisheries management, research projects, commercial fishing, and aquatic conservation. Designed to be strong, reliable and long lasting in demanding wet environments, these nets make it easier to capture, monitor and protect fish stocks with confidence.

We select our netting for durability, precision engineering and practical use in the field. Whether you’re conducting scientific surveys, managing river ecosystems or deploying nets on commercial watercraft, our products provide dependable performance and ease of handling.

Our range of machined Fish cages have four open corners and a hem to allow for a 2″ diameter pipe. They are made in house at Collins Nets so if you can’t find the size you are looking for, please give us a call or email fisheries@collinsnets.co.uk with your requirements. If you are looking for a framing kit then please take a look at our floating rigid pipe and fittings.

Applications of Fish Cages, Survey & Gill Nets

  • Fish Surveys & Scientific Monitoring – Ideal for population studies, species tracking and ecological assessments in freshwater and coastal environments.
  • Fisheries Management – Helps in capturing, tagging, or relocating fish as part of stock control and conservation practices.
  • Commercial Gill Netting – Designed for effective catch rates with specialised mesh sizes and configurations suited to target species.
  • Fish Holding & Containment – Cages provide secure temporary housing for live fish during stocking, measurement or tagging work.
  • River, Estuary & Marine Use – Products suitable for use across a range of aquatic settings, from low-current rivers to coastal waters.

Features & Benefits

  • Premium Quality Netting Materials – UV-stabilised polyamide, polyethylene and monofilament options for strength and longevity.
  • Precision Mesh Options – Available in a range of mesh sizes to suit target species, legal requirements and survey objectives.
  • Durable & Weather-Resistant – Built to withstand repeated deployment in sun, saltwater or freshwater without rapid wear.
  • Easy to Deploy & Retrieve – Designed for smooth handling, whether from riverbanks, boats or wading positions.
  • Range of Sizes & Configurations – From compact survey nets to larger gill nets and fish cages, supporting a variety of uses.

Why Choose Collins Nets for Fish Cages, Survey & Gill Nets?

  • Expertise in Aquatic Netting Solutions – Years of supplying professional-grade nets to environmental scientists, fisheries teams and commercial fishers.
  • Extensive Stock & Quick Dispatch – We maintain high stock levels so you can order the equipment you need without long lead times.
  • Full Range of Accessories Available – Including floats, lead lines, ropes, net bags and frames — everything to complete your setup.
  • Quality & Performance You Can Rely On – Designed to perform in real field conditions, helping you work efficiently and safely.

For help choosing the right net type, mesh size or configuration for your project, or to discuss bulk and trade orders, call our experienced sales team on 01308 485422.

Fish Cages & Survey Gill Nets FAQs

What is the difference between fish cages and survey gill nets?

Fish cages are used to hold, grade, or temporarily contain fish, while survey gill nets are designed to sample wild fish populations for monitoring or stock assessment. Cages focus on containment and welfare, while gill nets focus on capture efficiency, selectivity, and scientific consistency. Each tool serves a distinct operational purpose for fisheries managers.

What factors should I consider when choosing between mesh types?

Mesh aperture affects containment, water flow, and selectivity. Fine micromesh prevents escapes and protects small fish, while larger mesh improves circulation and reduces fouling. For survey nets, mesh size determines which size classes can be sampled reliably. Choosing the right mesh depends on fish size, operational objectives, and regulatory guidance.

What are the biosecurity risks of using fish cages or survey gill nets?

Both gear types can carry algae, parasites, fish eggs, and sediment between sites. Standard clean–dry–disinfect protocols are essential, especially when moving between catchments or sensitive water bodies. Many managers adopt site-specific kits to reduce contamination risk.

Do I need a licence to use gill nets or fish cages?

Gill nets almost always require permissions, especially in inland waters or when used for scientific surveys. Fish cages typically require landowner or site-management approval. Operators should verify local rules on mesh sizes, tagging, soak times, and reporting but this is general guidance only.

How long can gear be left in the water before checking?

Fish cages should be checked frequently to ensure welfare, especially in warm weather or crowded conditions. Survey gill nets are commonly soaked from dusk to dawn to reduce bycatch mortality. Operational fishing nets may require shorter soak durations.