Minecraft wiki entry for Fish_farming, associated text: Pre-1.16, automatic fish farming involves right-clicking a door with tripwire above it and hoppers for collection. It’s a good idea to use an automatic fishing rod dropper to supply new fishing rods when the previous one breaks. The ideal rod is Lure III, Luck of the Sea III, Unbreaking III and Mending. For some AFK farms, it is required to hold down a button or key. For these, they can only be truly AFK if it is held down by something besides a person.