Can African Jewel Cichlid and Electric Blue Johannii Live Together?
African Jewel Cichlid and Electric Blue Johannii 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
Can your tank handle African Jewel Cichlid and Electric Blue Johannii?
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.
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Behaviour & Temperament
Both African Jewel Cichlid and Electric Blue Johannii are semi-aggressive species with an aggression score of 8/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.
Both African Jewel Cichlid and Electric Blue Johannii are highly aggressive, increasing the risk of violent confrontations.
African Jewel Cichlid and Electric Blue Johannii both frequent the Middle (Open Water) and 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.
Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks. Two aggressive species housed together increases risk of fighting.
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 African Jewel Cichlid (6.5–7.5) and Electric Blue Johannii (7.8–8.6) 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.
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Tank Setup
To house African Jewel Cichlid and Electric Blue Johannii together, plan for an aquarium of at least 221 litres with a minimum length of 90 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), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both African Jewel Cichlid and Electric Blue Johannii.
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
180 Gallon Standard
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Frequently Asked Questions
Can African Jewel Cichlid and Electric Blue Johannii live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do African Jewel Cichlid and Electric Blue Johannii need?
A minimum of 221 litres (tank length at least 90 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 African Jewel Cichlid and Electric Blue Johannii 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 African Jewel Cichlid or Electric Blue Johannii aggressive?
African Jewel Cichlid is semi-aggressive (8/10) and Electric Blue Johannii is semi-aggressive (8/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do African Jewel Cichlid and Electric Blue Johannii need?
Their pH requirements do not overlap. African Jewel Cichlid prefers 6.5–7.5, while Electric Blue Johannii needs 7.8–8.6. This makes them incompatible in the same water chemistry.
How do I manage African Jewel Cichlid's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives African Jewel 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.
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