Can Fairy Cichlid (Brichardi) and Rummy-Nose Tetra Live Together?
Fairy Cichlid (Brichardi) and Rummy-Nose 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
Behaviour & Temperament
Fairy Cichlid (Brichardi) is a semi-aggressive species (8/10), while Rummy-Nose Tetra is peaceful (1/10). This notable difference means Fairy Cichlid (Brichardi) may occasionally assert dominance over Rummy-Nose Tetra.
Large aggression gap (7 points) between Fairy Cichlid (Brichardi) and Rummy-Nose Tetra increases stress risk for the more peaceful fish.
Fairy Cichlid (Brichardi) and Rummy-Nose Tetra 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: Aggressive fish may bully and stress shy, slow-moving species.
Water Parameters
The safe temperature window for both species falls between 24°C and 27°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.
The pH requirements of Fairy Cichlid (Brichardi) (8–9) and Rummy-Nose Tetra (5.5–7) 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. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Fairy Cichlid (Brichardi) and Rummy-Nose Tetra together, plan for an aquarium of at least 132 litres with a minimum length of 75 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), Smooth Gravel (Sensitive Barbels), Plants - Densely covered, Plants - lighly covered, Leaf Litter/Blackwater. 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.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Fairy Cichlid (Brichardi) and Rummy-Nose Tetra live together?▾
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Fairy Cichlid (Brichardi) and Rummy-Nose Tetra need?▾
A minimum of 132 litres (tank length at least 75 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 Fairy Cichlid (Brichardi) and Rummy-Nose Tetra together?▾
Keep the aquarium between 24°C and 27°C. A target of around 25.5°C sits comfortably within both species' preferred ranges.
Are Fairy Cichlid (Brichardi) or Rummy-Nose Tetra aggressive?▾
Fairy Cichlid (Brichardi) is semi-aggressive (8/10) and Rummy-Nose 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 Fairy Cichlid (Brichardi) and Rummy-Nose Tetra need?▾
Their pH requirements do not overlap. Fairy Cichlid (Brichardi) prefers 8–9, while Rummy-Nose Tetra needs 5.5–7. This makes them incompatible in the same water chemistry.
How do I manage Fairy Cichlid (Brichardi)'s territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Fairy Cichlid (Brichardi) 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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