Monitoring fish populations is crucial for conservation and management. Some common techniques include electrofishing, gillnetting, mark and recapture, acoustic telemetry, and underwater cameras. Electrofishing involves using an electric current to temporarily stun fish for easy capture and counting. Gillnetting uses nets to capture fish by entangling them. Mark and recapture involves marking fish, releasing them, and then recapturing some to estimate the population size. Acoustic telemetry uses tags to track fish movements and behavior. Underwater cameras provide visual data on fish populations. Each technique has its advantages and limitations, so a combination of methods is often used for more accurate results.

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Topics covered in this question:

Techniques Conservation Acoustic Telemetry Fish Population Monitoring Management Electrofishing