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Assassin Snail
Clea helena
Family: Nassariidae
📍 Southeast Asia
Assassin snails are the go-to solution for controlling pest snail infestations in freshwater aquariums. They hunt and consume other snails methodically, and will also scavenge meaty foods. They breed slowly and do not typically overrun a tank like pest species do.
Keeping this species
- diet
- Carnivore/Scavenger – pest snails, bloodworms, sinking protein pellets
- breeding
- Slow; lays small individual eggs on hard surfaces
- lifespan
- 2–3 years
- max size
- 3 cm (1.2 in)
- tank size
- 10 gallons minimum
- temperament
- Predatory toward snails; peaceful toward fish and shrimp
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Tips from the community 💡
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Water it likes
- ph
- 7.0–8.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 5–20 dGH
- temperature
- 68–81°F (20–27°C)
Natural Habitat Temperature
75°F — 81°F seasonal range · (Jan low, Apr high)