Items
When installed on its own, Stardew Fishing does not include any items. However, when either Tide or Aquaculture are installed, you can craft and apply Stardew Fishing's 5 bobber items. Bobber items have 64 durability that get depleted when you catch a fish.
Bobber Items
Trap Bobber
Causes fish to escape slower when you aren't reeling them in (when the fishing bar is not over the fish). When applied to your fishing rod, the trap bobber grants +33% Fishing Line Strength.

Cork Bobber
Slightly increases the size of your "fishing bar", making it easier to catch fish. When applied to your fishing rod, the cork bobber grants +10 Fishing Bar Size. (2)

Sonar Bobber
Shows what fish is on the line before it's caught.

Treasure Bobber
Fish don't escape while collecting treasures. Also slightly increases the chance to find treasures. When applied to your fishing rod, the treasure bobber grants +5% Chance to find Treasure. (3)

Quality Bobber
Greatly increases experience gained from fishing. When applied to your fishing rod, the quality bobber grants +40% Experience from Fishing. (4)

Using Bobbers
Bobber items must be attached to your fishing rod in order to take effect.
Tide
With Tide installed, you can use the Angling Table to attach bobbers. Place your fishing rod in the rod slot (top left), place your bobber in the bobber slot (middle right), and then take the new fishing rod.
Aquaculture
With Aquaculture installed, you can use the Tackle Box to attach bobbers. Place your fishing rod in the rod slot (top right), place your bobber in the bobber slot (bottom right), and then take back your fishing rod. Please note that you must craft a fishing rod from the Aquaculture mod, such as the Iron Fishing Rod, to attach bobbers.
- Trap bobber effectiveness is configurable.
- Cork bobber effectiveness is configurable.
- Treasure bobber effectiveness is configurable.
- Quality bobber effectiveness is configurable.