What equipment is typically used in electrofishing?

The use of electrofishers with a power source is essential in an electrofishing operation. This equipment generates an electrical field in the water, which temporarily stuns fish, allowing them to be easily collected for scientific study, identification, or population assessment. The power source enables the electrofisher to create the necessary voltage and current to effectively target different species of fish while ensuring their survival after capture.

The other options, while relevant to various fishing or research practices, do not directly apply to the specific technique of electrofishing. Fishing nets and traps are passive capture methods and do not involve electricity. Sonar equipment is useful for locating fish but does not assist in capturing them, and all-terrain vehicles, while important for accessing remote fishing sites, do not play a role in the electrofishing process itself. Thus, the most relevant and accurate answer pertaining to the equipment used in electrofishing is indeed the electrofishers with a power source.