Bass is a food item obtained by cooking raw bass on either a fire or a range with a Cooking level of 43. Doing so yields 130 Cooking experience. They can be purchased for 270 coins each from Lidio in the Warriors' Guild Food Shop. Bass heal 13 hitpoints when eaten.
Bass are not frequently fished, as big-net fishing frequently catches lower-level fish and items like caskets and seaweed in addition to bass.