Can Afra Cichlid and Julii Corydoras (False Julii) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

Afra Cichlid and Julii Corydoras (False Julii) are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Afra Cichlid

Cynotilapia afra

Julii Corydoras (False Julii)

Corydoras trilineatus

🐠Family Group
Afra Cichlid
Cichlids - African
Julii Corydoras (False Julii)
Catfish
Temperament
Afra Cichlid
Aggressive (8/10)
Julii Corydoras (False Julii)
Peaceful (0/10)
Temperature
✓ Compatible
Afra Cichlid
24–28°C
Julii Corydoras (False Julii)
22–26°C
pH Range
✗ No overlap
Afra Cichlid
7.6–8.6
Julii Corydoras (False Julii)
6–7.5
Hardness (dGH)
✓ Compatible
Afra Cichlid
10–25
Julii Corydoras (False Julii)
2–15
Water Type
✓ Compatible
Afra Cichlid
Freshwater Only
Julii Corydoras (False Julii)
Freshwater Only
Flow Preference
✓ Compatible
Afra Cichlid
Moderate
Julii Corydoras (False Julii)
Moderate
Min Tank Volume
Combined: 260 L
Afra Cichlid
200 L
Julii Corydoras (False Julii)
60 L
Swimming Level
Shared: 1 zone
Afra Cichlid
MiddleBottom
Julii Corydoras (False Julii)
Bottom
🏷️Behavior Tags
Afra Cichlid
Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Digger (Disturbs Substrate)Plant DestroyerFry PredatorHyperactive / Fast Swimmer
Julii Corydoras (False Julii)
Hyperactive / Fast Swimmer
Stocking calculator

Can your tank handle Afra Cichlid and Julii Corydoras (False Julii)?

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.

Afra Cichlid
Julii Corydoras (False Julii)
Test both in my tank

Behaviour & Temperament

Afra Cichlid is a semi-aggressive species (8/10), while Julii Corydoras (False Julii) is peaceful (0/10). This notable difference means Afra Cichlid may occasionally assert dominance over Julii Corydoras (False Julii).

Large aggression gap (8 points) between Afra Cichlid and Julii Corydoras (False Julii) increases stress risk for the more peaceful fish.

Afra Cichlid and Julii Corydoras (False Julii) both frequent the Bottom (Substrate) 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 26°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

The pH requirements of Afra Cichlid (7.6–8.6) and Julii Corydoras (False Julii) (6–7.5) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Afra Cichlid and Julii Corydoras (False Julii) together, plan for an aquarium of at least 260 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: Sand (Sifters), Established Algae (Otocinclus). Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Why This Pairing Usually Fails in Practice

Afra Cichlid and Julii Corydoras (False Julii) 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 Afra Cichlid and Julii Corydoras (False Julii).

Show 1 more tank size

Frequently Asked Questions

Can Afra Cichlid and Julii Corydoras (False Julii) live together?

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

What size tank do Afra Cichlid and Julii Corydoras (False Julii) need?

A minimum of 260 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 Afra Cichlid and Julii Corydoras (False Julii) together?

Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Afra Cichlid or Julii Corydoras (False Julii) aggressive?

Afra Cichlid is semi-aggressive (8/10) and Julii Corydoras (False Julii) is peaceful (0/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Afra Cichlid and Julii Corydoras (False Julii) need?

Their pH requirements do not overlap. Afra Cichlid prefers 7.6–8.6, while Julii Corydoras (False Julii) needs 6–7.5. This makes them incompatible in the same water chemistry.

How do I manage Afra Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Afra Cichlid 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
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