Detailed description of the idea
Two options:
- Add a bait item that, when held in the off-hand, would significantly increase the chance of catching a specific type of fish. There could be different baits for different fish types. I imagine it would be a stackable item that is consumed each time the fishing rod is cast and would require a custom recipe to craft.
- A custom enchantment for the fishing rod that significantly increases the chance of catching a specific type of fish. There could be different custom enchantments for different fish types.