Can Assassin Snail and Pygmy Corydoras Live Together?

🟢Ideal Tank Mates

Yes, Assassin Snail and Pygmy Corydoras 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 46 litres is recommended.


At a Glance

Assassin Snail

Clea helena

Pygmy Corydoras

Corydoras pygmaeus

🐠Family Group
Assassin Snail
Invertebrates
Pygmy Corydoras
Catfish
Temperament
Assassin Snail
Peaceful (2/10)
Pygmy Corydoras
Peaceful (0/10)
Temperature
✓ Compatible
Assassin Snail
22–28°C
Pygmy Corydoras
22–26°C
pH Range
✓ Compatible
Assassin Snail
7–8
Pygmy Corydoras
6–7.5
Hardness (dGH)
✓ Compatible
Assassin Snail
8–15
Pygmy Corydoras
2–15
Water Type
✓ Compatible
Assassin Snail
Freshwater Only
Pygmy Corydoras
Freshwater Only
Flow Preference
✓ Compatible
Assassin Snail
Low
Pygmy Corydoras
Moderate
Min Tank Volume
Combined: 46 L
Assassin Snail
10 L
Pygmy Corydoras
38 L
Swimming Level
Shared: 1 zone
Assassin Snail
Bottom
Pygmy Corydoras
MiddleBottom
🏷️Behavior Tags
Assassin Snail
Nano / Bite-sized (Predation Risk)Snail EaterDigger (Disturbs Substrate)
Pygmy Corydoras
Nano / Bite-sized (Predation Risk)Shy / Slow Moving (Easily Stressed)Hyperactive / Fast Swimmer

Behaviour & Temperament

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

Assassin Snail and Pygmy Corydoras 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 26°C. Aim for the midpoint of this range (around 24.0°C) for optimal comfort.

Both fish can tolerate a pH between 7 and 7.5. 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.

Tank Setup

To house Assassin Snail and Pygmy Corydoras together, plan for an aquarium of at least 46 litres with a minimum length of 45 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), Plants - Densely covered. 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.

Frequently Asked Questions

Can Assassin Snail and Pygmy Corydoras live together?

Yes. Assassin Snail and Pygmy Corydoras 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 Pygmy Corydoras need?

A minimum of 46 litres (tank length at least 45 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 Pygmy Corydoras together?

Keep the aquarium between 22°C and 26°C. A target of around 24.0°C sits comfortably within both species' preferred ranges.

Are Assassin Snail or Pygmy Corydoras aggressive?

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

What pH do Assassin Snail and Pygmy Corydoras need?

Both species overlap in the 7–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.


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