Can Assassin Snail and Peacock Bass Temensis Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Assassin Snail and Peacock Bass Temensis are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Assassin Snail

Anentome helena

Peacock Bass Temensis

Cichla temensis

🐠Family Group
Assassin Snail
Invertebrates
Peacock Bass Temensis
Cichlids - South American
Temperament
Assassin Snail
Peaceful (2/10)
Peacock Bass Temensis
Aggressive (7/10)
Temperature
✓ Compatible
Assassin Snail
22–28°C
Peacock Bass Temensis
26–30°C
pH Range
✓ Compatible
Assassin Snail
7–8
Peacock Bass Temensis
5.5–7.5
Hardness (dGH)
✓ Compatible
Assassin Snail
8–15
Peacock Bass Temensis
2–15
Water Type
✓ Compatible
Assassin Snail
Freshwater Only
Peacock Bass Temensis
Freshwater Only
Flow Preference
✗ No overlap
Assassin Snail
Low
Peacock Bass Temensis
High
Min Tank Volume
Combined: 3000 L
Assassin Snail
10 L
Peacock Bass Temensis
3000 L
Swimming Level
✓ Different zones
Assassin Snail
Bottom
Peacock Bass Temensis
MiddleTop
🏷️Behavior Tags
Assassin Snail
Nano / Bite-sized (Predation Risk)Snail EaterDigger (Disturbs Substrate)
Peacock Bass Temensis
Piscivore (Eats small/nano fish)Hyperactive / Fast SwimmerJumper (Lid Required)Generally Aggressive
Stocking calculator

Can your tank handle Assassin Snail and Peacock Bass Temensis?

Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.

Assassin Snail
Peacock Bass Temensis
Test both in my tank

Behaviour & Temperament

Assassin Snail is a peaceful species (2/10), while Peacock Bass Temensis is semi-aggressive (7/10). This notable difference means Peacock Bass Temensis may occasionally assert dominance over Assassin Snail.

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

There is a critical concern: the Nano / Bite-sized (Predation Risk) behaviour of one fish directly conflicts with the Piscivore (Eats small/nano fish) trait of the other — piscivorous fish will prey on nano-sized tank mates..

Worth noting: Peacock Bass Temensis is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 26°C and 28°C. Aim for the midpoint of this range (around 27.0°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 Peacock Bass Temensis together, plan for an aquarium of at least 3000 litres with a minimum length of 300 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

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), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.

Assassin Snail prefers Low (Still Water) flow while Peacock Bass Temensis needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

Why This Pairing Usually Fails in Practice

Assassin Snail and Peacock Bass Temensis are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.

Frequently Asked Questions

Can Assassin Snail and Peacock Bass Temensis live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Assassin Snail and Peacock Bass Temensis need?

A minimum of 3000 litres (tank length at least 300 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 Peacock Bass Temensis together?

Keep the aquarium between 26°C and 28°C. A target of around 27.0°C sits comfortably within both species' preferred ranges.

Are Assassin Snail or Peacock Bass Temensis aggressive?

Assassin Snail is peaceful (2/10) and Peacock Bass Temensis is semi-aggressive (7/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Assassin Snail and Peacock Bass Temensis 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.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 7, 2026
Last updated
May 7, 2026
Issues or corrections?
Contact the editorial team

Related Comparisons

Assassin Snail & Apple Snail

·

Ideal Tank Mates
Assassin Snail: PeacefulApple Snail: Peaceful

Assassin Snail & Bee Shrimp

·

Not Recommended
Assassin Snail: PeacefulBee Shrimp: Peaceful

Assassin Snail & Bee Shrimp (Crystal Red / Black)

·

Not Recommended
Assassin Snail: PeacefulBee Shrimp (Crystal Red / Black): Peaceful

Assassin Snail & Bladder Snail (Pest Snail)

·

Ideal Tank Mates
Assassin Snail: PeacefulBladder Snail (Pest Snail): Peaceful

Assassin Snail & Blue Pearl Shrimp

·

Ideal Tank Mates
Assassin Snail: PeacefulBlue Pearl Shrimp: Peaceful

Assassin Snail & Brown Camo Shrimp

·

Ideal Tank Mates
Assassin Snail: PeacefulBrown Camo Shrimp: Peaceful

Peacock Bass Temensis & Dwarf Green Pike Cichlid

·

Possible with Caution
Peacock Bass Temensis: PeacefulDwarf Green Pike Cichlid: Peaceful

Peacock Bass Temensis & Freshwater Angelfish

·

Possible with Caution
Peacock Bass Temensis: PeacefulFreshwater Angelfish: Peaceful

Peacock Bass Temensis & Peacock Bass Monoculus

·

Possible with Caution
Peacock Bass Temensis: PeacefulPeacock Bass Monoculus: Peaceful

Peacock Bass Temensis & Peacock Bass Ocellaris

·

Possible with Caution
Peacock Bass Temensis: PeacefulPeacock Bass Ocellaris: Peaceful

Peacock Bass Temensis & Peacock Bass Orinocensis

·

Possible with Caution
Peacock Bass Temensis: PeacefulPeacock Bass Orinocensis: Peaceful

Peacock Bass Temensis & Pike Cichlid (Xingu)

·

Possible with Caution
Peacock Bass Temensis: PeacefulPike Cichlid (Xingu): Peaceful