Fish shocker

Types of fish shockers

A fish shocking machine is an equipment that uses electricity to stun or capture fish. Depending on the design, the types can be categorized based on how it is used on the fish. There are three main types of fish shockers: backpack fish shockers, gas generator-powered electrofishing shockers, and boat-mounted electrofishing gear.

• Backpack fish shocker

  The backpack fish shocker is a portable electroshock device that field biologists regularly wear on their backs for sampling fish in the streams and rivers. Power in this electrofishing device is generally provided by a battery that is either constructed as part of the unit or slung in a side bag. In waters with greater conductivity, the backpack fish shockers are most useful, that is, where the voltage needed to stun fish is low.

• Gas generator-powered electrofishing shocker

  This type of fish shocker generator runs on gas. It is used when there is a need to cover large areas of water or deeper water bodies like lakes, rivers, and reservoirs. Operating the gas-powered electrofishing shocker requires the use of a small boat, canoe, or kick-seining method. It has an advantage over a battery-powered shocker in that it can work for a longer period of time without having to stop to refuel or change the electrode. One limitation is that the generator can produce an audible noise that can frighten fish.

• Boat-mounted electrofishing gear

  Boat-mounted electrofishing gear is used to survey fish abundance during routine fish health evaluations. It is commonly used in large lakes and rivers, where electrofishing sampling is the sole practical means of capturing fish. These devices are typically mounted on a boat and are generally powered by gas or a vehicle-mounted alternator.

Specifications and maintenance of fish shockers

Specifications

• VOLTAGE

  Fish shockers are built to operate at particular voltage levels. The majority of fish shockers operate at low-voltage direct current (DC) between 12 and 24 volts. The power source for this range of voltages can be a vehicle battery or a solar-powered battery.

• POWER SOURCE

  Fish shocking equipment includes a power supply that determines how the current is produced and delivered to the water. Popular power sources include portable generators and vehicle batteries.

• TYPE OF FISH SHOCKER

  Machine shockers work on the basis of transforming electric power into a circuit operating at a particular frequency and voltage. There is anode and cathode placement in the water. Voltage range fish shockers include backpack electrofishers, boat-mounted electrofishers, and truck-mounted electrofishers.

• FREQUENCY AND PULSE WIDTH

  The fish shocker technician can control the characteristics of the electrical field used for fish attraction by adjusting the frequency and pulse width. Normally, fish shockers work at a frequency between 60 Hz and 120 Hz. A wide pulse can produce a higher voltage. The pulse width is typically between 3 and 6 milliseconds.

Maintenance

Proper care should be taken to maintain the fish shocker equipment. The following tips can help ensure the fish shocker works fine to catch fish.

• Clean after use: After using the fish shocking device, especially in difficult-to-reach places, it is important to clean it up and get rid of any residual water or contaminants. To avoid corrosion and other issues, make sure all of the parts are completely dry before putting them away.
• Battery maintenance: It's critical to routinely charge a battery-powered fish shocker and keep the water away from the batteries. If a shocker uses a vehicle battery, make sure to periodically inspect the battery's state and the connections to ensure a strong charge.
• Electrical component check: The performance of the fish shocker device may depend on the proper functioning of its electrical parts. It's important to check regularly for signs of wear or corrosion of cables, connectors, and control boxes, and to clean or replace them when necessary.

Industry applications of fish shockers

The fish shocking method creates a temporary electric field around the fish, making it easy to spot and catch even in murky waters. Electrical fish shockers are used mainly for scientific surveys in lakes, rivers, and ponds where the following applications take place:

• Fish inventory and population assessment: biologists use fish shockers to estimate species composition, fish abundance, and population structure. This information will help them determine whether to close or open an area for fishing.
• Fish health evaluation: Researchers use fish shockers to collect samples and examine the prevalence of parasites and diseases affecting fish. They can also check for deformities and mortality patterns among the shocked fish.
• Behavioral studies: Fish shockers can be used to investigate fish behavior/movement patterns. For example, researchers can study fish migration, feeding habits, predator avoidance, and habitat preferences.
• Impact assessment: after an environmental change or event early like a natural disaster. Fish shockers help determine the effect of habitat degradation, pollution, and invasive species on the fish populations.
• Habitat exploration: Fish shockers help determine the distribution of fish in a particular habitat. This is important for areas with variable environmental conditions like deep underwater structures, tight crevices, rocky bottoms, and submerged vegetation.
• Ecological research: Electrofishing surveys provide valuable data on the ecological role and spatial distribution of fish species in a given habitat.
• Invasive species management: When some species become invasive, the ecosystems may change, and biodiversity may reduce. Fish shockers can help control invasive species populations in affected ecosystems.

How to Choose Fish Shockers

• Focus on Construction Quality

  A fish shocker's construction directly impacts its performance and durability. Stainless steel components are less likely to corrode, and shockers with sealed or waterproof parts can better withstand wet conditions. Investigate the materials used, manufacturing standards, and any applicable warranties to ensure a long-lasting tool.

• An Adjustable Voltage

  Choose fish shockers that can modify their voltage settings according to different water conductivities and fish sizes. Adapting the voltage can improve fishing efficiency and reduce harm to fish and personnel.

• A Comfortable Grip

  A comfortable grip is essential when using a fish shocker for extended periods or in challenging conditions. Consider the handle's size, texture, and weight distribution, as well as the overall weight of the shocker. A well-designed handle can help reduce fatigue and improve control during use.

• Waterproof and Durable

  The fish shocker must be waterproof and durable to survive in various fishing situations. Durability guarantees a longer lifespan and less frequent replacements, while waterproofing protects the equipment from water damage. Select an electric fish shocker that is both waterproof and durable, allowing it to endure diverse fishing situations and environmental settings.

• Portable Design

  Due to the widespread use of electric fish shockers in various fishing circumstances, the portable design of the shockers has become a crucial aspect. Whether fishing in remote locations or transporting the equipment for maintenance or storage, a portable electric fish shocker can easily meet changing fishing needs. It is essential to choose a shocker with a portable design to ensure the equipment's versatility and convenience.

Fish shocker FAQ

Q1: What is the effect of shocking fish?

A1: The fish's body experiences several physiological changes due to electrical shock. The blood vessels expand, and blood flow increases, causing a state of partial paralysis and making the fish easy to catch. In extreme cases, the heart may stop momentarily, leading to cardiac arrest.

Q2: Is shocking fish illegal?

A2: Yes, shocking fish is illegal in most states and provinces. It is considered unethical fishing practice and can have devastating impacts on the ecosystem.

Q3: Does the fish shocker kill them?

A3: Well-designed fish shockers do not kill the fish. Their purpose is to stun, capture, and examine them. However, faulty machines, excessive voltage, or prolonged exposure can be fatal to the fish.

Q4: How safe are fish shockers?

A4: When used carefully and under proper guidelines, they are generally safe for both the operator and the environment. They are designed to use low voltage that is not harmful to humans. However, like any other electrical device, proper precautions should be observed.