Fish Pro is a fishing gear perk that gives you extra meat when you catch fish. It is part of the Angler gear and speeds up fishing for trade goods.
Each fish you catch yields more meat than usual. You need fewer catches to gather what you want.
Only during a fishing session. Put it on with the rest of the Angler set, then switch back.
Improved Angler, Improved Reel Speed and Hot Streak make each catch faster and easier.