What is the range of frequency used in electrofishing?

The frequency range used in electrofishing typically falls between 20 to 50 hertz (Hz). This range is effective for stimulating fish and making them more susceptible to capture without causing undue harm. Frequencies in this range allow for an efficient electrical field that can induce muscle contractions in fish, causing them to move towards the surface for easier collection.

Lower frequencies, such as those below 20 Hz, may not provide sufficient voltage or stimulation to effectively attract fish, while higher frequencies can lead to increased stress or injury, making them less ideal for electrofishing practices. Therefore, the selected range of 20 to 50 Hz is optimal for balancing effectiveness in capture while maintaining fish welfare.