Can False Glass Catfish and Peacock Cichlid (Aulonocara) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

False Glass Catfish and Peacock Cichlid (Aulonocara) 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

False Glass Catfish

Kryptopterus macrocephalus

Peacock Cichlid (Aulonocara)

Aulonocara sp.

🐠Family Group
False Glass Catfish
Catfish
Peacock Cichlid (Aulonocara)
Cichlids - African
Temperament
False Glass Catfish
Peaceful (2/10)
Peacock Cichlid (Aulonocara)
Semi-Aggressive (6/10)
Temperature
✓ Compatible
False Glass Catfish
22–28°C
Peacock Cichlid (Aulonocara)
24–28°C
pH Range
✗ No overlap
False Glass Catfish
5–7
Peacock Cichlid (Aulonocara)
7.8–8.6
Hardness (dGH)
✗ No overlap
False Glass Catfish
1–8
Peacock Cichlid (Aulonocara)
10–25
Water Type
✓ Compatible
False Glass Catfish
Freshwater Only
Peacock Cichlid (Aulonocara)
Freshwater Only
Flow Preference
✓ Compatible
False Glass Catfish
Low
Peacock Cichlid (Aulonocara)
Moderate
Min Tank Volume
Combined: 200 L
False Glass Catfish
110 L
Peacock Cichlid (Aulonocara)
200 L
Swimming Level
Shared: 1 zone
False Glass Catfish
Middle
Peacock Cichlid (Aulonocara)
BottomMiddle
🏷️Behavior Tags
False Glass Catfish
Shy / Slow Moving (Easily Stressed)Fry PredatorShrimp Eater
Peacock Cichlid (Aulonocara)
Territorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)
Stocking calculator

Can your tank handle False Glass Catfish and Peacock Cichlid (Aulonocara)?

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.

False Glass Catfish
Peacock Cichlid (Aulonocara)
Test both in my tank

Behaviour & Temperament

False Glass Catfish is a peaceful species (2/10), while Peacock Cichlid (Aulonocara) is moderately assertive (6/10). This notable difference means Peacock Cichlid (Aulonocara) may occasionally assert dominance over False Glass Catfish.

False Glass Catfish and Peacock Cichlid (Aulonocara) both frequent the Middle (Open Water) 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 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

The pH requirements of False Glass Catfish (5–7) and Peacock Cichlid (Aulonocara) (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: False Glass Catfish needs 1–8 dGH while Peacock Cichlid (Aulonocara) requires 10–25 dGH.

Tank Setup

To house False Glass Catfish and Peacock Cichlid (Aulonocara) together, plan for an aquarium of at least 200 litres with a minimum length of 120 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: Plants - Densely covered, Plants - Floating, Leaf Litter/Blackwater, Sand (Sifters), Smooth Gravel (Sensitive Barbels). 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.

Why This Pairing Usually Fails in Practice

False Glass Catfish and Peacock Cichlid (Aulonocara) 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 False Glass Catfish and Peacock Cichlid (Aulonocara).

Show 5 more tank sizes

Frequently Asked Questions

Can False Glass Catfish and Peacock Cichlid (Aulonocara) live together?

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

What size tank do False Glass Catfish and Peacock Cichlid (Aulonocara) need?

A minimum of 200 litres (tank length at least 120 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 False Glass Catfish and Peacock Cichlid (Aulonocara) 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 False Glass Catfish or Peacock Cichlid (Aulonocara) aggressive?

False Glass Catfish is peaceful (2/10) and Peacock Cichlid (Aulonocara) is moderately assertive (6/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do False Glass Catfish and Peacock Cichlid (Aulonocara) need?

Their pH requirements do not overlap. False Glass Catfish prefers 5–7, while Peacock Cichlid (Aulonocara) needs 7.8–8.6. This makes them incompatible in the same water chemistry.

How do I manage Peacock Cichlid (Aulonocara)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Peacock Cichlid (Aulonocara) 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.

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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