Fishing
Every fish you can catch with a Handmade Fishing Rod — how hard it fights, the bait and water depth it needs, and what you get when you cut it. All values from the Rust game files. For passive catches, bait a Survival Fish Trap on the shoreline instead.
Best fishing bait
Higher bait value attracts better fish. Every bait of value 2+ (game files):
Any berry, fruit or vegetable also works as basic bait (value 1); Raw Fish is the weakest at 0.5.
Catch difficulty = the fish's StrainModifier (how hard it pulls); bait level / water depth are the minimums to hook it. Source: Rust game files (ItemModSwap).