Can Fly River Rainbowfish and Livingston's Cichlid Live Together?
Fly River Rainbowfish and Livingston's Cichlid 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 Fly River Rainbowfish and Livingston's Cichlid?
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.
Behaviour & Temperament
Fly River Rainbowfish is a peaceful species (2/10), while Livingston's Cichlid is semi-aggressive (8/10). This notable difference means Livingston's Cichlid may occasionally assert dominance over Fly River Rainbowfish.
Large aggression gap (6 points) between Fly River Rainbowfish and Livingston's Cichlid increases stress risk for the more peaceful fish.
Fly River Rainbowfish and Livingston's Cichlid 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: Fly River Rainbowfish is a known jumper, so a tight-fitting lid is essential.
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 Fly River Rainbowfish (6–7.5) and Livingston's Cichlid (7.6–8.6) 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.
Tank Setup
To house Fly River Rainbowfish and Livingston's Cichlid together, plan for an aquarium of at least 470 litres with a minimum length of 150 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: Plants - Densely covered, Plants - lighly covered, Sand (Sifters). 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.
Why This Pairing Usually Fails in Practice
Fly River Rainbowfish and Livingston's Cichlid are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Fly River Rainbowfish and Livingston's Cichlid.
Frequently Asked Questions
Can Fly River Rainbowfish and Livingston's Cichlid live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Fly River Rainbowfish and Livingston's Cichlid need?
A minimum of 470 litres (tank length at least 150 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 Fly River Rainbowfish and Livingston's Cichlid 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 Fly River Rainbowfish or Livingston's Cichlid aggressive?
Fly River Rainbowfish is peaceful (2/10) and Livingston's Cichlid is semi-aggressive (8/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Fly River Rainbowfish and Livingston's Cichlid need?
Their pH requirements do not overlap. Fly River Rainbowfish prefers 6–7.5, while Livingston's Cichlid needs 7.6–8.6. This makes them incompatible in the same water chemistry.
How do I manage Livingston's Cichlid's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Livingston's 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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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 7, 2026
- Last updated
- May 7, 2026
- Issues or corrections?
- Contact the editorial team
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