Can Assassin Snail and Bladder Snail (Pest Snail) Live Together?

🟢Ideal Tank Mates

Yes, Assassin Snail and Bladder Snail (Pest Snail) are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. A minimum tank size of 12 litres is recommended.


At a Glance

Assassin Snail

Clea helena

Bladder Snail (Pest Snail)

Physella acuta

🐟Family Group
Assassin Snail
Invertebrates
Bladder Snail (Pest Snail)
Invertebrates
Temperament
Assassin Snail
Peaceful (2/10)
Bladder Snail (Pest Snail)
Peaceful (0/10)
Temperature
✓ Compatible
Assassin Snail
22–28°C
Bladder Snail (Pest Snail)
10–30°C
pH Range
✓ Compatible
Assassin Snail
7–8
Bladder Snail (Pest Snail)
6–8.5
Hardness (dGH)
✓ Compatible
Assassin Snail
8–15
Bladder Snail (Pest Snail)
4–20
Water Type
✓ Compatible
Assassin Snail
Freshwater Only
Bladder Snail (Pest Snail)
Freshwater Only
Flow Preference
✓ Compatible
Assassin Snail
Low
Bladder Snail (Pest Snail)
Low
Min Tank Volume
Combined: 12 L
Assassin Snail
10 L
Bladder Snail (Pest Snail)
2 L
Swimming Level
Shared: 1 zone
Assassin Snail
Bottom
Bladder Snail (Pest Snail)
TopMiddleBottom
🏷️Behavior Tags
Assassin Snail
Nano / Bite-sized (Predation Risk)Snail EaterDigger (Disturbs Substrate)
Bladder Snail (Pest Snail)
Nano / Bite-sized (Predation Risk)Hyperactive / Fast Swimmer

Behaviour & Temperament

Assassin Snail is a peaceful species (2/10), while Bladder Snail (Pest Snail) is peaceful (0/10). This modest difference means Assassin Snail may occasionally assert dominance over Bladder Snail (Pest Snail).

Assassin Snail and Bladder Snail (Pest Snail) both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Water Parameters

The safe temperature window for both species falls between 22°C and 28°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

Both fish can tolerate a pH between 7 and 8. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–15 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Assassin Snail and Bladder Snail (Pest Snail) together, plan for an aquarium of at least 12 litres with a minimum length of 20 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

Specific environmental needs for this combination include: Sand (Sifters), Established Algae (Otocinclus). Meeting these requirements will help both species thrive.

Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.

Find the right tank equipment

Browse tanks, décor, and equipment suited for this setup.

Frequently Asked Questions

Can Assassin Snail and Bladder Snail (Pest Snail) live together?

Yes. Assassin Snail and Bladder Snail (Pest Snail) are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Assassin Snail and Bladder Snail (Pest Snail) need?

A minimum of 12 litres (tank length at least 20 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.

What water temperature is best for Assassin Snail and Bladder Snail (Pest Snail) together?

Keep the aquarium between 22°C and 28°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Assassin Snail or Bladder Snail (Pest Snail) aggressive?

Assassin Snail is peaceful (2/10) and Bladder Snail (Pest Snail) is peaceful (0/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Assassin Snail and Bladder Snail (Pest Snail) need?

Both species overlap in the 7–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.


Related Comparisons