The bloatfish is a creature resembling a white mana ray, but with a balloon-like organ swelling from its belly (its diameter is slightly more than the fish's 1-2 ft. length). This organ, due to the fish's unique body chemistry, is filled with fresh water. The fish's main use for adventurers is as a handy living waterskin, sipping fresh water from the creature's frozen corpse by poking a hole in the side of the organ. When the organ is empty, the fish itself makes a good meal.
Bloatfish travel lin schools of 1d4*10, are unintelligent, and skittish (Unreliable (2) Morale).