Could throwing a shocker toy in a river wipe out the fish population?

like if you threw a buzzer or toy used to shock people could it kill all or some of the fish in a river?Could throwing a shocker toy in a river wipe out the fish population?
First, joy buzzers are wind-up "shockers", not electrical. Second, expecting something that small to electrocute or even stun fishes would be like tossing a cigarette lighter into the water and expecting it to boil the body of water dry.



There are fish shockers that fishery biologists use to collect fishes but they are much larger and have a limited range, a matter of a few feet at most.Could throwing a shocker toy in a river wipe out the fish population?
no the electricity will tak the shortest path to complete a circuit which would be the distance between the shocker contacts. It therefore will not go a longer distance to shock other fish/people in the river.



Also the water will most likely short out the circuitry causing the device to fail and stop generating voltage.