Bladder Snail

Physella acuta

Easy
📏
Max Size
2cm (0.8″)
🏠
Min Tank Size
10L
⚗️
pH Range
6 - 8
🌡️
Temperature
18-28°C
(64-82°F)
🐟
Temperament
Peaceful

Care Requirements

💧 Water Parameters

pH Level
6 - 8
Temperature
18-28°C (64-82°F)

🏠 Tank Setup

Minimum Tank Size
10 Litres (2.6 US Gallons)
Temperament
Peaceful

🍽️ Diet & Feeding

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.

⚥ Sexual Dimorphism

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

🌍 Origin

North America

About 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.

Ready to Add Bladder Snail to Your Tank?

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

Try the Stocking Calculator

Keep Your Bladder Snail Happy with Fishi

Track your aquarium's health and ensure your Bladder Snail is thriving with the Fishi mobile app!

  • ✓ Monitor water parameters for optimal Bladder Snail health
  • ✓ Get reminders for water changes and maintenance
  • ✓ Track feeding schedules
  • ✓ Log tank observations and fish behavior
  • ✓ Manage multiple tanks effortlessly
Download on App StoreGet it on Google Play

Loved by over 100,000 fishkeepers

Fishi mobile app showing aquarium management dashboard