The note for this request can be found in the Lakeside Settlement behind the Insignia door. The fish in question can be found just to the left of the Boathouse.
RE4R Request: Chapter 4 Catch Me a Big Fish
Emmie Jacob Game Guides & Pottery
Website where I post Game Guides for the games I play and pictures of the pottery I'm making! The site is pretty new, so expect more guides to come.