Torchlight/Fish

Fish are items that can be acquired from using the Fishing Holes randomly available throughout the dungeon. They come most often as potions that affect your pet, but also as potions that affect your character, socketable gems, wearable jewelry, and even unidentified boots.

Some character-consumable fish are available only in specific tilesets.

Additionally, when fishing, there are "weights" that affect how likely each type of fish is to be found. These weights are a two-step process: first, the tileset-specific weighting is applied, and then (if necessary) the generic weighting is applied.