In Fisch, you’ll need not only good bait, but also better fishing rods to catch rare fish. You can find several of these that you can purchase from the Merchant NPC’s shop, but you won’t find the Magma Rod there in Fisch. That’s because you’ll need to complete a certain activity to get it — here’s everything you need to do.

Also read | Where to catch the rare sturgeon

First you need to get to Roslit Island. Here is Fisch's map if you're not sure where to find it.

All you have to do is head straight left from Moosewood to reach the location.