The easiest spot to find ghostfish is down in the mines around floor 20 or if you're feeling brave, floor 60. Bring a fiberglass rod with some bait, and watch for those blue sparkly spots in the water that usually mean better catches. If you're having trouble landing them, grabbing some fishing buff food like dish o' the sea can make a real difference, especially since these pale guys can be a bit tricky with their movement patterns.

Once you've got some ghostfish, there's actually quite a bit you can do with them. They're needed for that specialty fish bundle in the community center, and if cooking's your thing they work great in maki rolls or sashimi. Something interesting to consider is dropping them in a fish pond, where they'll start producing roe right away but the real value comes when you get more fish in there. With a bigger population, they'll give you useful stuff like quartz and even pale broth occasionally.

If fishing isn't working out for you, keep an eye on those ghost enemies around floors 51-79, they drop ghostfish sometimes, or check the traveling cart when it comes around though the prices there can be pretty steep. The whole process gets easier once you've got decent fishing skills but even newer players can handle it with the right preparation and a bit of patience.