Drone fishing is indeed a thing.
I, for one, welcome our robot overlords.
Drones are already fighting our wars, finding our missing children, and zombifying our cats, and soon, they may be making our lakes and rivers annoying by buzzing around them and catching (apparently really tiny) fish.
I remember the good old days when fishing was just a man communing with nature, and maybe a $600 fish finder. But this? And I was worried about robots taking our JOBS.