Not from a boat, with a boat...
The fish are an introduced species, the Silver Carp, from Asia, which has become a very abundant fish. They were introduced for aquaculture, but escaped, and are spreading. In Indiana, if you catch one, you must kill it and not return it to the water. Looks to me like it's too late for that to make much difference.
I wonder how Snakeheads like them?
Hat tip to Brian.