Can Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) are not recommended as tank mates due to conflicting pH requirements and incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Amazon Leaf Fish

Monocirrhus polyacanthus

Tanganyikan Clown Cichlid (Eretmodus)

Eretmodus cyanostictus

🐠Family Group
Amazon Leaf Fish
Other
Tanganyikan Clown Cichlid (Eretmodus)
Cichlids - African
Temperament
Amazon Leaf Fish
Peaceful (2/10)
Tanganyikan Clown Cichlid (Eretmodus)
Aggressive (7/10)
Temperature
✓ Compatible
Amazon Leaf Fish
23–29°C
Tanganyikan Clown Cichlid (Eretmodus)
24–28°C
pH Range
✗ No overlap
Amazon Leaf Fish
5–6.8
Tanganyikan Clown Cichlid (Eretmodus)
8–9.5
Hardness (dGH)
✗ No overlap
Amazon Leaf Fish
0–8
Tanganyikan Clown Cichlid (Eretmodus)
10–25
Water Type
✓ Compatible
Amazon Leaf Fish
Freshwater Only
Tanganyikan Clown Cichlid (Eretmodus)
Freshwater Only
Flow Preference
✗ No overlap
Amazon Leaf Fish
Low
Tanganyikan Clown Cichlid (Eretmodus)
High
Min Tank Volume
Combined: 100 L
Amazon Leaf Fish
75 L
Tanganyikan Clown Cichlid (Eretmodus)
100 L
Swimming Level
✓ Different zones
Amazon Leaf Fish
MiddleTop
Tanganyikan Clown Cichlid (Eretmodus)
Bottom
🏷️Behavior Tags
Amazon Leaf Fish
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)Nocturnal
Tanganyikan Clown Cichlid (Eretmodus)
Territorial (Defends specific area)Aggressive to same species/look-alikes
Stocking calculator

Can your tank handle Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus)?

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.

Amazon Leaf Fish
Tanganyikan Clown Cichlid (Eretmodus)
Test both in my tank

Behaviour & Temperament

Amazon Leaf Fish is a peaceful species (2/10), while Tanganyikan Clown Cichlid (Eretmodus) is semi-aggressive (7/10). This notable difference means Tanganyikan Clown Cichlid (Eretmodus) may occasionally assert dominance over Amazon Leaf Fish.

In terms of spatial distribution, Amazon Leaf Fish prefers the Middle (Open Water) and Top (Surface) zones, whereas Tanganyikan Clown Cichlid (Eretmodus) occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Amazon Leaf Fish is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

Water Parameters

The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

The pH requirements of Amazon Leaf Fish (5–6.8) and Tanganyikan Clown Cichlid (Eretmodus) (8–9.5) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Amazon Leaf Fish needs 0–8 dGH while Tanganyikan Clown Cichlid (Eretmodus) requires 10–25 dGH.

Tank Setup

To house Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) together, plan for an aquarium of at least 100 litres with a minimum length of 90 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: Leaf Litter/Blackwater, Plants - Densely covered, Driftwood (Digestion/Hiding), Plants - Floating, Smooth Gravel (Sensitive Barbels), Established Algae (Otocinclus). Meeting these requirements will help both species thrive.

Amazon Leaf Fish prefers Low (Still Water) flow while Tanganyikan Clown Cichlid (Eretmodus) 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

Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus).

Show 10 more tank sizes

Frequently Asked Questions

Can Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) live together?

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

What size tank do Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) need?

A minimum of 100 litres (tank length at least 90 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 Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) together?

Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.

Are Amazon Leaf Fish or Tanganyikan Clown Cichlid (Eretmodus) aggressive?

Amazon Leaf Fish is peaceful (2/10) and Tanganyikan Clown Cichlid (Eretmodus) 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 Amazon Leaf Fish and Tanganyikan Clown Cichlid (Eretmodus) need?

Their pH requirements do not overlap. Amazon Leaf Fish prefers 5–6.8, while Tanganyikan Clown Cichlid (Eretmodus) needs 8–9.5. This makes them incompatible in the same water chemistry.

How do I manage Tanganyikan Clown Cichlid (Eretmodus)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Tanganyikan Clown Cichlid (Eretmodus) space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.

Does Amazon Leaf Fish being nocturnal affect compatibility?

Amazon Leaf Fish is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Amazon Leaf Fish during evening hours.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 4, 2026
Last updated
May 4, 2026
Issues or corrections?
Contact the editorial team

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