Participate in the fishing tournament and try to catch a rare one-- It may be the one Flayn is after.
To win the tournament, Byleth must use the Tournament Baits to catch a Teutates Herring and present it to Flayn. They can be caught from a Red or Yellow Fish Shadow. The player is given 50 Tournament Baits to accomplish this, although the player is not required to use up the 50 baits.
Prior to giving Flayn the herring, Byleth can speak to the other tournament participants and compare the size of the largest fish they've caught with the participants' fish. Byleth will gain items from the participants if their fish is larger. Comparing fish sizes does not remove them from the inventory.
- Ashe: Show him a fish of 3 stars of higher and he'll give Byleth a Vulnerary.
- Ignatz: Show him a fish of 2 stars or higher and he'll give Byleth a Vulnerary.
- Ingrid: Show her a fish of 2 stars or higher and she'll give Byleth a Tomato.
- Raphael: Show him a fish of 4 stars or higher and he'll give Byleth a Wild Game.
- Caspar: Show him a fish of 2 stars or higher and he'll give Byleth an Iron Axe.
- Petra: Show her a fish of 3 stars or higher and she'll give Byleth an Iron Sword.
- Catherine: Show her a fish of 4 stars or higher and she'll give Byleth a Steel Sword.
Talking to Flayn after getting one or more Teutates Herrings will end the quest. The quest items (in gift list) do not convert to regular fish.
"Welcome to the fishing tournament. If you catch the type of fish that Flayn asks for, you might win a prize. Participate if you want. It's really not my concern."
"The fishing tournament is over. Flayn seems overjoyed, and I'm certain that pleased Seteth as well."
The quest is given by Shamir at the Monastery Fishing Spot.