Best for
Aquariums with stable parameters and enough space.
A
Invertebrate · Freshwater
Assassin snail
Clea helena
Assassin snail is a popular freshwater invertebrate in fishkeeping and suitable for well maintained aquariums.
Difficulty
Beginner
Aggression
0/10
Size
3.00 cm
Minimum volume
20 L
Temperature
20.0-28.0 ºC
Zone
Whole tank
Lifespan
2 years
Quick profile scan
invertebrate
Aggression
0/10
Activity
Moderate
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Check whether this species fits your aquarium
Analyze volume, parameters, behavior and relationships with other species.
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Quick verdict
A practical summary to quickly decide whether it fits your aquarium.
Typical risk
Stability depends on temperature, group size, and real compatibility.
Aquarium zone
Where it lives best
Surface
primary
Midwater
primary
Bottom
primary
Quick compatibility
Community signals
Shrimp
Compatible
Snails
Compatible
Slow fish
Compatible
Aggressive fish
Conditional
Small fish
Compatible
Large fish
Compatible
Delicate plants
Conditional
Buying decision
Before buying Assassin snail
Review these points before adding it to your aquarium. They are practical notes based on its profile, ecological data, and known relationships.
L
Adult volume
Make sure your aquarium is above 20 L before buying it.
Parameters
Water conditions
pH
7.0 - 8.2
GH
8 - 18
KH
4 - 10
Temperature
20.0 - 28.0 ºC
Common mistakes
What to avoid
Keeping it in tanks below the recommended adult volume.
Essential care
Weekly 25% water changes. Keep shelters and stable water parameters.
Daily time
10 min
Breeding
Breeding depends on the species but improves in mature aquariums with stable parameters.
Oviparous
Easy
No presenta diferencias sexuales evidentes
Alerts and health
- Dureza alta
- Plantas resistentes
- Espacio para nadar
Common issues
Problemas de piel
Hongos
Parásitos
Expert notes
Interesting details
01
Ayuda a consumir biofilm y restos
02
Es frecuente en acuarios de mantenimiento
Editorial confidence
Last review: June 2026
Content based on parameters, ecological profiles and manual relationships.
Profile data
Ecological profile
Manual relationships
General aquarium observation