Can Afra Cichlid and Delicate Blue-Eye Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

Afra Cichlid and Delicate Blue-Eye 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

Delicate Blue-Eye

Pseudomugil tenellus

🐠Family Group
Afra Cichlid
Cichlids - African
Delicate Blue-Eye
Rainbowfish
Temperament
Afra Cichlid
Aggressive (8/10)
Delicate Blue-Eye
Peaceful (1/10)
Temperature
✓ Compatible
Afra Cichlid
24–28°C
Delicate Blue-Eye
25–32°C
pH Range
✗ No overlap
Afra Cichlid
7.6–8.6
Delicate Blue-Eye
5–7.5
Hardness (dGH)
✓ Compatible
Afra Cichlid
10–25
Delicate Blue-Eye
5–15
Water Type
✓ Compatible
Afra Cichlid
Freshwater Only
Delicate Blue-Eye
Brackish Tolerant
Flow Preference
✓ Compatible
Afra Cichlid
Moderate
Delicate Blue-Eye
Moderate
Min Tank Volume
Combined: 253 L
Afra Cichlid
200 L
Delicate Blue-Eye
60 L
Swimming Level
Shared: 1 zone
Afra Cichlid
MiddleBottom
Delicate Blue-Eye
TopMiddle
🏷️Behavior Tags
Afra Cichlid
Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Digger (Disturbs Substrate)Plant DestroyerFry PredatorHyperactive / Fast Swimmer
Delicate Blue-Eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Stocking calculator

Can your tank handle Afra Cichlid and Delicate Blue-Eye?

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
Delicate Blue-Eye
Test both in my tank

Behaviour & Temperament

Afra Cichlid is a semi-aggressive species (8/10), while Delicate Blue-Eye is peaceful (1/10). This notable difference means Afra Cichlid may occasionally assert dominance over Delicate Blue-Eye.

Large aggression gap (7 points) between Afra Cichlid and Delicate Blue-Eye increases stress risk for the more peaceful fish.

Afra Cichlid and Delicate Blue-Eye 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.

Worth noting: Delicate Blue-Eye is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 25°C and 28°C. Aim for the midpoint of this range (around 26.5°C) for optimal comfort.

The pH requirements of Afra Cichlid (7.6–8.6) and Delicate Blue-Eye (5–7.5) 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 Delicate Blue-Eye together, plan for an aquarium of at least 253 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), Plants - Densely covered, Plants - Floating. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Afra Cichlid is a plant destroyer, which conflicts with Delicate Blue-Eye's requirement for live plants. Compromise where possible or prioritise the more critical need.

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 Delicate Blue-Eye 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 Delicate Blue-Eye.

Show 1 more tank size

Frequently Asked Questions

Can Afra Cichlid and Delicate Blue-Eye 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 Delicate Blue-Eye need?

A minimum of 253 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 Delicate Blue-Eye together?

Keep the aquarium between 25°C and 28°C. A target of around 26.5°C sits comfortably within both species' preferred ranges.

Are Afra Cichlid or Delicate Blue-Eye aggressive?

Afra Cichlid is semi-aggressive (8/10) and Delicate Blue-Eye is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Afra Cichlid and Delicate Blue-Eye need?

Their pH requirements do not overlap. Afra Cichlid prefers 7.6–8.6, while Delicate Blue-Eye needs 5–7.5. 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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