Can Demasoni Cichlid (Mbuna) and Lemon Tetra Live Together?

🔴Not Recommended

Demasoni Cichlid (Mbuna) and Lemon 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

Demasoni Cichlid (Mbuna)

Chindongo demasoni

Lemon Tetra

Hyphessobrycon pulchripinnis

🐠Family Group
Demasoni Cichlid (Mbuna)
Cichlids - African
Lemon Tetra
Characins
Temperament
Demasoni Cichlid (Mbuna)
Highly Aggressive (9/10)
Lemon Tetra
Peaceful (1/10)
Temperature
✓ Compatible
Demasoni Cichlid (Mbuna)
24–28°C
Lemon Tetra
22–28°C
pH Range
✗ No overlap
Demasoni Cichlid (Mbuna)
7.6–8.6
Lemon Tetra
5.5–7.5
Hardness (dGH)
✓ Compatible
Demasoni Cichlid (Mbuna)
10–25
Lemon Tetra
2–15
Water Type
✓ Compatible
Demasoni Cichlid (Mbuna)
Freshwater Only
Lemon Tetra
Freshwater Only
Flow Preference
✓ Compatible
Demasoni Cichlid (Mbuna)
High
Lemon Tetra
Moderate
Min Tank Volume
Combined: 240 L
Demasoni Cichlid (Mbuna)
200 L
Lemon Tetra
60 L
Swimming Level
Shared: 1 zone
Demasoni Cichlid (Mbuna)
BottomMiddle
Lemon Tetra
Middle
🏷️Behavior Tags
Demasoni Cichlid (Mbuna)
Aggressive to same species/look-alikesTerritorial (Defends specific area)Plant DestroyerDigger (Disturbs Substrate)Hyperactive / Fast SwimmerGenerally Aggressive
Lemon Tetra
Hyperactive / Fast SwimmerFry Predator

Behaviour & Temperament

Demasoni Cichlid (Mbuna) is a highly aggressive species (9/10), while Lemon Tetra is peaceful (1/10). This notable difference means Demasoni Cichlid (Mbuna) may occasionally assert dominance over Lemon Tetra.

Large aggression gap (8 points) between Demasoni Cichlid (Mbuna) and Lemon Tetra increases stress risk for the more peaceful fish.

Demasoni Cichlid (Mbuna) and Lemon 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.

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 Demasoni Cichlid (Mbuna) (7.6–8.6) and Lemon Tetra (5.5–7.5) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–15 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Demasoni Cichlid (Mbuna) and Lemon Tetra together, plan for an aquarium of at least 240 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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 - lighly covered, Leaf Litter/Blackwater. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Demasoni Cichlid (Mbuna) is a plant destroyer, which conflicts with Lemon Tetra's requirement for live plants. Compromise where possible or prioritise the more critical need.

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

Find the right tank equipment

Browse tanks, décor, and equipment suited for this setup.

Frequently Asked Questions

Can Demasoni Cichlid (Mbuna) and Lemon Tetra live together?

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

What size tank do Demasoni Cichlid (Mbuna) and Lemon Tetra need?

A minimum of 240 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 Demasoni Cichlid (Mbuna) and Lemon 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 Demasoni Cichlid (Mbuna) or Lemon Tetra aggressive?

Demasoni Cichlid (Mbuna) is highly aggressive (9/10) and Lemon Tetra is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Demasoni Cichlid (Mbuna) and Lemon Tetra need?

Their pH requirements do not overlap. Demasoni Cichlid (Mbuna) prefers 7.6–8.6, while Lemon Tetra needs 5.5–7.5. This makes them incompatible in the same water chemistry.

How do I manage Demasoni Cichlid (Mbuna)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Demasoni Cichlid (Mbuna) 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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