The Bladderfish is a small, passive fauna kind in the Sabnautica game. It can be caught in the Safe Shallows and the Grand Reef and can be eaten. Being a slow and passive fish, it is easy to catch, especially during nighttime. Filtered Water is a consumable item that fills players' H2O levels. It can be created with the Fabricator. Subnautica game cursor with Bladderfish and Filtered Water.