The Jewelfish is a quest item that is needed for the Angler. This Fish is obtained by fishing underground in water.
Oooooohhh, I'm going to be SO rich! Deep in the caverns, there is a fish made out of gemstones! Don't ask me how, I don't know, all I know is that this fish is totally awesome and you're going to catch it for me!
- Added to the game.