Overview
The Assassin Snail (Clea helena) is a beginner freshwater species known for its yellow, brown-black spiral bands coloration. Eats pest snails. Bottom to Surfaces.
Origin & Appearance
Origin: Southeast Asia.
Colors: Yellow, Brown-Black spiral bands.
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 | 5 gallons |
| Temperature | 72–81°F |
| pH Range | 6.5–7.5 |
| Water Hardness (GH) | 5-15 |
| Bioload | low |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Bottom to Surfaces |
Behavior & Activity
Predatory slow tracker; hunts other snails by following slime trails; buries in sand to ambush prey snails
Speed: 12/100Aggression: 1/10diurnalSchooling (3+)
Breeding
Slow breeder; buries eggs in substrate
Common Diseases
💊 Shell erosion in soft/acidic water
Expert Notes
Eats pest snails