Bladder Snail Care Guide

Physella acuta

PeacefulEasyFreshwater
Max Size
2.0 cm / 0.8"
Temperature
18–28°C (64–82°F)
pH Range
6.0 – 8.0
Min Tank Size
10L (3 gal)
Min Group Size
Can be kept alone
Tank Level
Bottom
Origin
North America
Temperament
Peaceful
Difficulty
Easy
Breeding Difficulty
Easy

Diet

Omnivorous; they feed on algae, biofilm, and decaying plant matter.

Community Compatibility

Peaceful small fish and other invertebrates; they are non-aggressive and coexist easily.

Gender Differences

Females are slightly larger; otherwise, sexes are hard to distinguish externally.

About the Bladder Snail

If tenacity had a tiny shell, it would be a Bladder Snail crawling along your aquarium glass. Physella acuta is one of those unassuming little creatures that somehow becomes impossible to ignore once you start watching. Its translucent, spiraled shell lets you glimpse the slow, precise mechanics of life inside, while its wiggling tentacles and rhythmic glides across leaves and decorations give it a quirky, almost endearing personality.

These snails are surprisingly industrious. They’re constantly on the move, grazing on algae, leftover food, and detritus, quietly tidying up corners that might otherwise go unnoticed. Watching them explore is like observing a tiny, determined laborer at work—there’s a slow but steady diligence in every motion. Even their seemingly random climbs up glass or plants reveal a purposeful curiosity, as if each surface might hide some hidden treasure or snack.

Bladder Snails also have a fascinating life story beneath their delicate shells. They reproduce quickly and often, leaving tiny egg clusters that, if you watch closely, turn into a miniature ecosystem of snails crawling in every direction. While some aquarists see them as pests, there’s a certain charm in their resilience and adaptability. These little snails quietly transform a tank, not with flashy colors or frantic swimming, but with persistence, curiosity, and a subtle sense of life that’s almost meditative to observe.

Stock Bladder Snail in Your Tank

Use our free stocking calculator to see if Bladder Snail fits your aquarium