minnesota needs mosquitoes. Fish eat mosquito larva so if there was a drop in mosquitoes, fish would starve, and minnesota would lose tourism from vacationing fishermen.
Well, there's always black flies. Do fish eat black fly larva?
Not only fish and tourism impact, but birds, frogs, mosquito repellent vendors, and t-shirt vendors. I think with no mosquitos, Minnesota turns into a vacant lot.