Overview
The Freshwater Limpet (Ferrissia spp.) is a beginner freshwater species known for its brown-gray, tiny flat shell coloration. Tiny. Surfaces.
Origin & Appearance
Origin: Worldwide.
Colors: Brown-Gray, Tiny flat shell.
Body Shape: Snail (coiled shell). Typical adult dimensions: 0.5 x 0.4 x 0.5.
Sexual Dimorphism: Minimal; difficult to sex.
Tank & Water Requirements
| Min Tank Size | 3 gallons |
| Temperature | 64–82°F |
| pH Range | 6.5–7.5 |
| Water Hardness (GH) | 5-15 |
| Bioload | low |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Surfaces |
Behavior & Activity
Near-motionless surface clinger; grazes with imperceptible gliding; tiny flat shell barely visible
Speed: 12/100Aggression: 1/10diurnalSchooling (3+)
Breeding
Easy; most breed readily (except nerites in freshwater)
Common Diseases
💊 Shell erosion in soft/acidic water
Expert Notes
Tiny; often arrives as hitchhiker; harmless