He sent a letter requesting a red fish (which contains a trapped soul) from the Witch's Swamp. I tried a void salmon with no success - any guesses as to what type of fish he wants? Thanks for your advice.
Moved to Stardew Valley general. The social category is not for games that have their own forum. Please mind where you are posting.
Weird - are you using any mods? Can you maybe post a screenshot? All the requests that come by letter are pre-set, not randomly generated, and that doesn't sound like any of the letters that exist in the base game.