Beginning of Essay
There are a number of ways to collect fish for management and research, and there are various methods involving traps and nets to capture different types of fish and each method has its own advantages and shortcomings. The technique of electrofishing is perhaps o ....

Middle of Essay
.... backpack unit itself is housed in waterproof casing and mounted on a non-conductive frame. Power is supplied from a battery, conventionally 12-24V DC. Outputs from back mounted units can range anywhere from 100V to over 1000V DC with amperage from 10-60A. Maximum output power also varies from about 8Kw-70Kw. All backpack units offer the ability to select different levels of output and some of the more costly models offer different waveform selection to maximize the efficiency of battery use. Some models may last only a couple of hours at a medial output while others incorporate secondary batteries to provide longer periods of use. Using high-en ....