In Bailu there are six fishing spots in total. These are designated with wooden signs that have an outline of a fish on them. After renting fishing gear for the first time, four of the locations will be open to you right away: the lake (with two fishing docks), on the stream next to Joy Park, downstream from Verdant Bridge on a rock, and a pond just past the sunflower maze. In order to open up the other two fishing spots you must complete side quests for two villagers a little bit later in the game. First a boy in Panda Market will ask for a mini-soccer ball. Giving him this toy that you win from the pail toss game will open up a fishing spot at the tiny pond before the Hermit's Nest. Next a shop owner in Panda Market will ask you to find mushrooms by the stream near Verdant Bridge. Doing this will unlock fishing at the dock next to the stonemason's house that was ransacked. You must rent a fishing pole and fish at all six locations for the trophy to unlock.