They are threadfin and not gizzard shad right?
From what I know of rotenone most of the dead fish will float. If a pond that size is overrun with tshad there will be an astounding amount of dead to deal with. I would consider some kind of net to get them to the edge of the pond (or a windy day), then maybe a skidloader or small tractor and load them up and take them away. I cant give any info on smell, but I think it would last a week or so if I was guessing. Also scavengers will do their part, but not sure how fast they could clean up the mess.
If the pond is close enough that houses will be smelling dead fish, I would probably try to deal with them. If it is a few miles from houses etc. I would just get the deads out of the pond and let nature take its course.
Also not sure of your situation, but if you have a way of lowering the water level of the pond it will lower your chemical needs.
So you are trying to kill just the shad? I heard that was possible, would love to hear a report of how it goes and how many other fish stress/die.
And I agree with Zep, never heard of anyone getting rid of threadfin....now gizzards on the other hand..."guess it all depends"
Last edited by jakeb; 10/25/12 09:12 PM.
