Exploding Population is a world quest in Genshin Impact 2.1 that needs to be complete to unlock the fishing ability. This walkthrough will show how to obtain the quest, where to begin Exploding Population, the rewards, and the location! Completing this quest will grant you access to the Fishing System Gameplay, which will allow you to play and collect new fish species.
Talk to Katheryne in Mondstadt
As you start this world quest, your first objective is to visit Mondstadt and speak with Katheryne. Katheryne is the receptionist at the Adventure Guide store. She will inform you that Fishing Association claims that the fishing activity in the nearby waters has been abysmal. She asks Traveler to check the situation
Talk to Nantuck
Exit the Mondstadt main gate and take a left turn. You can find Nantuck fishing on the bank of the river. he will tell many new fish species have suddenly appeared in the nearby water and they don’t have enough manpower to catch many fishes. Fishing Association wants to catch all the new fish species in a short time for research.
Meet Nantuck at Cider lake.
Head to the Cider lake where Nantuck will train Traveler on how to catch a fish. You can find him north of Springvale near the lake.
Fish in Cider lake
After the cutscene moves a little bit toward the water edge where you see ripples in the water. Below are the steps on how to prepare select bait and Fish rod and how to hook a fish successfully. After catching the first fish successfully go back and speak with Nantuck again to start a cut scene.
Fishing Gameplay Overview
If you see ripples in a nearby water body, this means that it is a Fishing Point (prompt). Get close to the Fishing point and interact with it to start fishing. I have attached a screenshot for reference. Each fishing point will be refreshed every 3 days, during this period alteration between day and night will influence the appearance of fish.
Different water bodies contain different species of fish. While preparing for fish you can view the species that can be a catch here and select appropriate road and bait.
#1 Make a Bait: Traveler can make bait at the crafting bench.
#2 Select the appropriate Fishing Rod and bait
You then need to select your rod and bait. Different fishes are attached to a different kind of bait. While preparing for fish you can view the species that can be a catch here and select appropriate road and bait. Using the appropriate fishing rod of the area increases the chance of catching a fish.
From your inventory select Weapon > Gadget > Wildernedd Rod
#3 Cast your line and keep track of your fishing progress
Once correct fishing rod and bait are selected. Hold the cast button to enter aiming mode. Let go of the said button to flick the bait and hook out. If the hook lands too far then it may not attract the fish greatly. if it falls too near then fish will get shocked and will flee. When the fish are on-hook, press the raised hook button before the fish might eat the bait and flee.
Once the fish is caught in the hook, the fish will start to struggle. When fish enters a struggling state you can release the fish button to adjust the fishing line tension and keep it in the yellow ideal tension zone.
Fishing progress will only increase if you stay in the ideal zone otherwise it will drop. Once the progress is full, you will have successfully caught the fish. This new update and introduce new fishing pins that travelers can use to record fishing location on the map
Catch an Ornament fish in the Storm Bearer Mountains
After showing your first catch to Nantuck, your next goal is to catch an Ornament fish. Ornamental Fish are a more valuable specimen. Fishing areas with Ornamental Fish will have more ripple effects on water.
Head to the Storm bearer Mountain which is located in the northeast area of the island. Use the nearest Teleport waypoint Storm Bearer Mountain. you will see Ornamental Fish creating more ripple in water by taking a big jump out of the water and going back.
Select the appropriate Fishing Rod and bait. Hold the cast button to enter aiming mode. Let go of the said button to flick the bait and hook out. Once the fish is caught in the hook, the fish will start to struggle. Adjust the fishing line tension and keep it in the yellow ideal tension zone. Fishing progress will only increase if you keep the line tension in the ideal zone otherwise it will drop. Once the progress is full, you will have successfully caught the Ornamental Fish.
Show Nantuck the Ornamental Fish
After catching back an Ornamental Fish successfully, head back to Mondstadt. You can meet him again at the very same spot where you meet him the first time near the lake. This will end the quest.