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British Wildlife

8 issues per year 84 pages per issue Subscription only

British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.

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Conservation Land Management

4 issues per year 44 pages per issue Subscription only

Conservation Land Management (CLM) is a quarterly magazine that is widely regarded as essential reading for all who are involved in land management for nature conservation, across the British Isles. CLM includes long-form articles, events listings, publication reviews, new product information and updates, reports of conferences and letters.

Subscriptions from £22 per year
Wildlife Survey & Monitoring  Aquatic Survey & Monitoring  Fish Survey

E-Fish Electrofishing 500 W Backpack System

Manufacturer: E-Fish Limited
E-Fish Electrofishing 500 W Backpack System
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  • E-Fish Electrofishing 500 W Backpack System 7.5 Ah Not in stock: Usually dispatched within 1-2 months
Price: £6,950.00
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About this product

Please note that due to the size and weight of this item, additional shipping costs will apply. We will be in contact once you have placed your order to confirm these costs with you, or if you wish to discuss this before your order, please contact us on 01803 865913 or by email at Due to shipping restrictions we are not able to send this item to locations outside of mainland UK.

Electric fishing (or electro-fishing) has been proven to be a highly efficient and essential technique for monitoring fish populations in rivers and lakes, and performing rescue and relocation work of fish stocks.

Electro-fishing is the process of catching fish by creating an electrical-field through water, around an anode (on a hand held pole) and cathode (trailing in the water behind the operator). This electric field develops a voltage along the length of fish exposed to it, such that 'galvanotaxis' stimulates their nervous system, and they are forced to swim towards anode (the source of the field). At a point approaching the source of the field, the fish enters the hold-zone, where the field is then of sufficient strength to temporarily immobilise them and thus aid in their capture.

This 500 Watt Backpack System is a complete electrofishing solution in one 'easy to transport' box. Compact, portable and rugged, the system been engineered with the user in mind; from quick change battery modules, a comfortable and ergonomic harness and anode grip, smart tilt and safety sensors and a simple yet intuitive control interface.

The 500 W Backpack System comes with a printed user manual and a laminated quick start guide, and contains the following components: 500 W backpack, Anode pole (without ring), Anode ring, Cathode, 7.5 Ah Battery pack allowing 60 min of continuous fishing at 150 W, Battery charger and Transit case. Spare batteries can also be purchased separately.

To minimise stress on wildlife during the fishing process, the backpack has been designed to meet the latest best practice electrofishing guidelines, and utilises high-speed microprocessor technology to digitally synthesise the output waveforms while closely monitoring delivered power and voltage.

For safety, the backpack uses state-of-the-art accelerometer technology to constantly measure the tile angle of the backpack in all directions. When ducking under branches, vegetation or obstacles at the side of rivers, the backpack will momentarily disable fishing until the operator straightens up, allowing maximum mobility with minimum hassle--but should the operator have stumbled and fallen, the backpack will then enter into its "emergency" state, and prevent further operation until fully reset.

Additionally, the backpack includes an optical immersion sensor (minimising reliability issues commonly seen with conventional float-type sensors) that stops fishing should the operator wade or fall into deep water, and an internal thermal sensor to ensurethe unit does not over-heat under high-load conditions.

'Quick-Change' battery packs to allow the user to swap power sources without the need to open any housings or re-route cabling. Several sizes (and weights) are available to suit every operator and  budget.

Please note that the nature of the high-voltage electric fields in the presence of water makes electro-fishing a potentially hazardous activity for both the operator, and assistants. As such, close attention must paid to operating procedures, user training and safety, so before proceeding the manufacturer strongly recommends that you read all the safety, deployment and operation guidelines in the user manual, and take these into consideration along with your organisations own safety policies.

Furthermore note that many countries impose legal restrictions, legislation and regulations on the use of electro-fishing techniques. Before using your fishing system you should always check with the government agency that has overall responsibilities for regulating fisheries in your geographical location.



Backpack and harness: 555 x 240 x 140 mm

Battery pack: 240 x 200 x 85 mm

Charger: 170 x 105 x 55 mm

Anode pole: Tip to: armrest 1400 mm, grip 1040 mm

Anode ring: 300 mm diameter

Cathode: 2 m total (1 m cable plus 1 m tail)



Backpack and harness: 6.6 kg

Battery pack: 6.3 kg (7.5 Ah) or 3.9 kg (3.3 Ah)

Anode pole and ring: 1.6 kg



Housings: ABS & Acetal plastic

Cabling: Kevlar reinforced, 3 kV insulated cable with 1.5 mm2 conductor cross section

Anode pole: Fibreglass, ABS and polyurethane

Anode ring: Stainless steel

Cathode: 25 mm tinned copper braid


Fishing controls:

Voltage output 50 V to 500 V, in 5 V steps

Power limiting 10 W to 500 W, in 10 W steps

Duty cycle 10% to 100% (DC), in 5% steps

Frequency range 10 Hz to 100 Hz, in 5 Hz steps

Fishing Timer 1 to 30 minutes, in 1 minute steps


User controls:

Backpack: emergency stop & reset buttons, 7 button keypad

Anode pole: Fishing trigger

Sensors: 2-axis tilt, optical immersion, internal thermal, output voltage and power

Battery voltage: Nominal 24 V DC (18 V DC to 26 V DC)

Temperature: 0° to +40°C in air


Environmental ratings:

Backpack: IP66

Battery pack: IP68

Anode pole: IP68

Battery charger: IP50


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