Electro-fishing (passing electricity through water to catch fish) is a popular method to stun fish and study them. When performed correctly, it usually does not kill the fish or cause any long-term damage to them. However, local fishermen use a crude version of this method to kill fish in lakes and streams in many regions of India. Often, diesel run generators, or worse, illegal use of overhead electric lines of the power grid is used to kill fish.
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