Can Assassin Snail and Neon Tetra Live Together?

🟢Ideal Tank Mates

Yes, Assassin Snail and Neon Tetra are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. They occupy different areas of the water column, which reduces competition for space. A minimum tank size of 46 litres is recommended.


At a Glance

Assassin Snail

Clea helena

Neon Tetra

Paracheirodon innesi

🐠Family Group
Assassin Snail
Invertebrates
Neon Tetra
Characins
Temperament
Assassin Snail
Peaceful (2/10)
Neon Tetra
Peaceful (1/10)
Temperature
✓ Compatible
Assassin Snail
22–28°C
Neon Tetra
20–26°C
pH Range
✓ Compatible
Assassin Snail
7–8
Neon Tetra
5–7.5
Hardness (dGH)
✓ Compatible
Assassin Snail
8–15
Neon Tetra
1–10
Water Type
✓ Compatible
Assassin Snail
Freshwater Only
Neon Tetra
Freshwater Only
Flow Preference
✓ Compatible
Assassin Snail
Low
Neon Tetra
Moderate
Min Tank Volume
Combined: 46 L
Assassin Snail
10 L
Neon Tetra
38 L
Swimming Level
✓ Different zones
Assassin Snail
Bottom
Neon Tetra
Middle
🏷️Behavior Tags
Assassin Snail
Nano / Bite-sized (Predation Risk)Snail EaterDigger (Disturbs Substrate)
Neon Tetra
Nano / Bite-sized (Predation Risk)Hyperactive / Fast Swimmer

Behaviour & Temperament

Assassin Snail is a peaceful species (2/10), while Neon Tetra is peaceful (1/10). This modest difference means Assassin Snail may occasionally assert dominance over Neon Tetra.

In terms of spatial distribution, Assassin Snail prefers the Bottom (Substrate) zone, whereas Neon Tetra occupies the Middle (Open Water) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

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 8–10 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Assassin Snail and Neon Tetra 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, Leaf Litter/Blackwater, Plants - Floating. 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 Neon Tetra live together?

Yes. Assassin Snail and Neon Tetra 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 Neon Tetra 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 Neon Tetra 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 Neon Tetra aggressive?

Assassin Snail is peaceful (2/10) and Neon Tetra is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Assassin Snail and Neon Tetra 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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