Equipment  Aquatic Survey  Fish Survey 

E-Fish Electrofishing 500 W Backpack System

E-Fish Limited

196410 | Availability: Usually dispatched within 1-2 weeks Details
NHBS Price: £6,600.00 inc VAT $8680/€7509 approx
199528 | Availability: Usually dispatched within 1-2 weeks Details
NHBS Price: £6,600.00 inc VAT $8680/€7509 approx

About this product

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, Battery pack (7.5 Ah or 3.3 Ah, allowing respectively 60 and 30 min of continuous fishing at 150 W), Battery charger and Transit case. Replacement/spare batteries can also be purchased separately (7.5 Ah and 3.3 Ah).

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 100 V to 400 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



Recommended Accessories

Heavy Duty Electrofishing Net Heavy Duty Electrofishing Net

This Electrofishing Net is very robust and has a 350mm wide pentagonal net head

NHBS Price: £94.50 inc VAT $124/€108 approx

Lightweight Electrofishing Net Lightweight Electrofishing Net

This Electrofishing Net is made from lightweight aluminium and has a 350mm wide D-shaped head

NHBS Price: £88.50 inc VAT $116/€101 approx

Power Options

E-Fish Electrofishing Backpack Battery Module: 7.5 Ah

A spare 7.5Ah battery pack for use with the E-Fish System

NHBS Price: £420.00 inc VAT $552/€478 approx

E-Fish Electrofishing Backpack Battery Modules: 3.3 Ah

A spare 3.3Ah battery pack for use with the E-Fish System

NHBS Price: £420.00 inc VAT $552/€478 approx

E-Fish Electrofishing Backpack Battery Charger

A spare or replacement battery charger

NHBS Price: £180.00 inc VAT $237/€205 approx

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VAT: GB 407 4846 44
NHBS Ltd is registered in England and Wales: 1875194