Can Assassin Snail and Endler's Livebearer Live Together?

🟢Ideal Tank Mates

Yes, Assassin Snail and Endler's Livebearer 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 23 litres is recommended.


At a Glance

Assassin Snail

Clea helena

Endler's Livebearer

Poecilia wingei

🐠Family Group
Assassin Snail
Invertebrates
Endler's Livebearer
Livebearers
Temperament
Assassin Snail
Peaceful (2/10)
Endler's Livebearer
Peaceful (1/10)
Temperature
✓ Compatible
Assassin Snail
22–28°C
Endler's Livebearer
22–28°C
pH Range
✓ Compatible
Assassin Snail
7–8
Endler's Livebearer
7–8.5
Hardness (dGH)
✓ Compatible
Assassin Snail
8–15
Endler's Livebearer
10–25
Water Type
✓ Compatible
Assassin Snail
Freshwater Only
Endler's Livebearer
Freshwater Only
Flow Preference
✓ Compatible
Assassin Snail
Low
Endler's Livebearer
Moderate
Min Tank Volume
Combined: 23 L
Assassin Snail
10 L
Endler's Livebearer
19 L
Swimming Level
✓ Different zones
Assassin Snail
Bottom
Endler's Livebearer
TopMiddle
🏷️Behavior Tags
Assassin Snail
Nano / Bite-sized (Predation Risk)Snail EaterDigger (Disturbs Substrate)
Endler's Livebearer
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator

Behaviour & Temperament

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

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

Worth noting: Endler's Livebearer is a known jumper, so a tight-fitting lid is essential.

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 10–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Assassin Snail and Endler's Livebearer together, plan for an aquarium of at least 23 litres with a minimum length of 30 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, 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 Endler's Livebearer live together?

Yes. Assassin Snail and Endler's Livebearer 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 Endler's Livebearer need?

A minimum of 23 litres (tank length at least 30 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 Endler's Livebearer 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 Endler's Livebearer aggressive?

Assassin Snail is peaceful (2/10) and Endler's Livebearer is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Assassin Snail and Endler's Livebearer need?

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


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