Bladderfish

The Bladderfish is a slow-moving, bulbous fish that stores water in a specialized bladder organ. Unlike most fish, consuming it raw restores both hunger and thirst, making it an invaluable resource before you can build a Water Filtration Machine or brew disinfected water. Its sluggish swimming makes it one of the easiest fish to catch by hand, and its dual food-and-water yield means every catch does double duty for survival.

Bladderfish drift slowly through the water column, relying on their water-filled bladders for buoyancy rather than active swimming. This low-energy lifestyle makes them easy prey but also easy to catch. They are commonly found in both shallow waters and the edges of kelp forests, where they feed on drifting plankton. Unlike the darting Peeper, Bladderfish barely react to approaching players, so you can usually grab them without strategy.

Bladderfish are the easiest edible fish to catch because of their slow movement and minimal flight response. You can simply swim up and grab them by hand. For bulk collection, a Propulsion Cannon lets you sweep up several at once. Because each Bladderfish provides both food and water, a small stockpile can sustain you for a long time before you need advanced water production.

Bladderfish is the only common fish that restores both food and water at the same time. Eating it raw preserves the water benefit; cooking it boosts food value but removes the hydration effect, so choose your preparation method based on what you need most.

Bladderfish spawn in both shallow waters and kelp forests from the surface down to 100m. They are widely distributed and easy to find throughout the early-game safe zone. Use the interactive map to locate the densest Bladderfish clusters near your base.