What are two methods to decrease resistance in electrofishing equipment?

The correct answer focuses on practical adjustments that can enhance the effectiveness of electrofishing equipment. Cleaning the anode ring is essential because dirt, debris, or corrosion can significantly increase electrical resistance. A clean anode ensures better conductivity and efficiency in the electrofishing process. Additionally, moving from shallow to deep water can decrease resistance due to the increased volume of water in deeper areas, which generally has a lower resistance profile compared to shallow waters.

In contrast, smaller anode rings might actually increase resistance, especially if the ring does not adequately cover the area needed for effective fish capture. Reducing water temperature does not directly control resistance effectively and is less relevant in a practical setting for electrofishing.

Increasing voltage while decreasing current is not a viable strategy, as this can lead to unsafe conditions and does not inherently address resistance. Lastly, using a battery does not inherently decrease resistance; rather, the relationship between voltage and water depth is more complex and does not directly contribute to resistance reduction in the way suggested here.