Overview
The Ramshorn Snail (Planorbella duryi) is a beginner freshwater species known for its red, brown, blue (varies) coloration. Flat spiral shell. All surfaces.
Origin & Appearance
Origin: North America.
Colors: Red, Brown, Blue (varies).
Body Shape: Snail (coiled shell). Typical adult dimensions: 3.0 x 2.4 x 2.4.
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 | All surfaces |
Behavior & Activity
Slow gliding on surfaces; can float upside-down at water surface on mucus raft; steady grazing path
Speed: 12/100Aggression: 1/10diurnalSchooling (3+)
Breeding
Very easy; prolific pest breeder
Common Diseases
💊 Shell erosion in soft/acidic water
Expert Notes
Flat spiral shell; prolific breeder