Can Afra Cichlid and Blue Tetra Live Together?

Not Recommended

Afra Cichlid and Blue Tetra 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

Blue Tetra

Knodus borki

🐠Family Group
Afra Cichlid
Cichlids - African
Blue Tetra
Characins
Temperament
Afra Cichlid
Aggressive (8/10)
Blue Tetra
Semi-Aggressive (5/10)
Temperature
βœ“ Compatible
Afra Cichlid
24–28Β°C
Blue Tetra
22–26Β°C
pH Range
βœ— No overlap
Afra Cichlid
7.6–8.6
Blue Tetra
5.5–7.5
Hardness (dGH)
βœ“ Compatible
Afra Cichlid
10–25
Blue Tetra
2–12
Water Type
βœ“ Compatible
Afra Cichlid
Freshwater Only
Blue Tetra
Freshwater Only
Flow Preference
βœ“ Compatible
Afra Cichlid
Moderate
Blue Tetra
Moderate
Min Tank Volume
Combined: 262 L
Afra Cichlid
200 L
Blue Tetra
90 L
Swimming Level
Shared: 1 zone
Afra Cichlid
MiddleBottom
Blue Tetra
TopMiddle
🏷️Behavior Tags
Afra Cichlid
Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Digger (Disturbs Substrate)Plant DestroyerFry PredatorHyperactive / Fast Swimmer
Blue Tetra
Hyperactive / Fast SwimmerFin NipperAggressive to same species/look-alikesJumper (Lid Required)
Stocking calculator

Can your tank handle Afra Cichlid and Blue Tetra?

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
Blue Tetra
Test both in my tank

Behaviour & Temperament

Afra Cichlid is a semi-aggressive species (8/10), while Blue Tetra is moderately assertive (5/10). This modest difference means Afra Cichlid may occasionally assert dominance over Blue Tetra.

Afra Cichlid and Blue Tetra 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: Blue Tetra is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 24Β°C and 26Β°C. Aim for the midpoint of this range (around 25.0Β°C) for optimal comfort.

The pH requirements of Afra Cichlid (7.6–8.6) and Blue Tetra (5.5–7.5) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–12 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Afra Cichlid and Blue Tetra together, plan for an aquarium of at least 262 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. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Afra Cichlid is a plant destroyer, which conflicts with Blue Tetra'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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Afra Cichlid and Blue Tetra.

Show 1 more tank size

Frequently Asked Questions

Can Afra Cichlid and Blue Tetra live together?

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

What size tank do Afra Cichlid and Blue Tetra need?

A minimum of 262 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 Blue Tetra together?

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

Are Afra Cichlid or Blue Tetra aggressive?

Afra Cichlid is semi-aggressive (8/10) and Blue Tetra is moderately assertive (5/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Afra Cichlid and Blue Tetra need?

Their pH requirements do not overlap. Afra Cichlid prefers 7.6–8.6, while Blue Tetra needs 5.5–7.5. This makes them incompatible in the same water chemistry.

Will Blue Tetra nip Afra Cichlid's fins?

Blue Tetra is a known fin nipper. If Afra Cichlid has long or flowing fins, there is a real risk of fin damage. Keeping Blue Tetra in a larger group can help redirect nipping behaviour toward conspecifics.

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 dΓ©cor that divides the tank into distinct zones works especially well.


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