Can Afra Cichlid and Red Eye Tetra Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Possible with Caution

Keeping Afra Cichlid and Red Eye Tetra together is possible but requires caution due to differing aggression levels. Provide a spacious tank of at least 272 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Afra Cichlid

Cynotilapia afra

Red Eye Tetra

Moenkhausia sanctaefilomenae

🐠Family Group
Afra Cichlid
Cichlids - African
Red Eye Tetra
Characins
Temperament
Afra Cichlid
Aggressive (8/10)
Red Eye Tetra
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Afra Cichlid
24–28°C
Red Eye Tetra
22–28°C
pH Range
✓ Compatible
Afra Cichlid
7.6–8.6
Red Eye Tetra
5.5–8.5
Hardness (dGH)
✓ Compatible
Afra Cichlid
10–25
Red Eye Tetra
3–20
Water Type
✓ Compatible
Afra Cichlid
Freshwater Only
Red Eye Tetra
Freshwater Only
Flow Preference
✓ Compatible
Afra Cichlid
Moderate
Red Eye Tetra
Moderate
Min Tank Volume
Combined: 272 L
Afra Cichlid
200 L
Red Eye Tetra
75 L
Swimming Level
Shared: 1 zone
Afra Cichlid
MiddleBottom
Red Eye Tetra
MiddleTop
🏷️Behavior Tags
Afra Cichlid
Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Digger (Disturbs Substrate)Plant DestroyerFry PredatorHyperactive / Fast Swimmer
Red Eye Tetra
Hyperactive / Fast SwimmerFin NipperFry PredatorPlant Destroyer
Stocking calculator

Can your tank handle Afra Cichlid and Red Eye 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
Red Eye Tetra
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Behaviour & Temperament

Afra Cichlid is a semi-aggressive species (8/10), while Red Eye Tetra is generally mild-mannered (3/10). This notable difference means Afra Cichlid may occasionally assert dominance over Red Eye Tetra.

Afra Cichlid and Red Eye 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.

To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Afra Cichlid and Red Eye Tetra to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations. A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat. Keep fin nippers in larger groups to distribute nipping behaviour among conspecifics rather than tank mates.

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.

Both fish can tolerate a pH between 7.6 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 10–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Afra Cichlid and Red Eye Tetra together, plan for an aquarium of at least 272 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.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

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 Red Eye 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.

Why This Pairing Needs Extra Planning in Practice

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Afra Cichlid and Red Eye Tetra need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Suitable Tank Sizes

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

Show 1 more tank size

Frequently Asked Questions

Can Afra Cichlid and Red Eye Tetra live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 272 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Afra Cichlid and Red Eye Tetra need?

A minimum of 272 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 Red Eye Tetra 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 Afra Cichlid or Red Eye Tetra aggressive?

Afra Cichlid is semi-aggressive (8/10) and Red Eye Tetra is generally mild-mannered (3/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Afra Cichlid and Red Eye Tetra need?

Both species overlap in the 7.6–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Red Eye Tetra nip Afra Cichlid's fins?

Red Eye Tetra is a known fin nipper. If Afra Cichlid has long or flowing fins, there is a real risk of fin damage. Keeping Red Eye 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 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 11, 2026
Last updated
May 11, 2026
Issues or corrections?
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