Can Neolamprologus Tretocephalus and Red Tailed Redeye Puffer Live Together?
Neolamprologus Tretocephalus and Red Tailed Redeye Puffer 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 Neolamprologus Tretocephalus and Red Tailed Redeye Puffer?
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
Neolamprologus Tretocephalus is a semi-aggressive species (8/10), while Red Tailed Redeye Puffer is moderately assertive (6/10). This modest difference means Neolamprologus Tretocephalus may occasionally assert dominance over Red Tailed Redeye Puffer.
Neolamprologus Tretocephalus and Red Tailed Redeye Puffer both frequent the Bottom (Substrate) and 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.
Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks.
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 Neolamprologus Tretocephalus (8–9) and Red Tailed Redeye Puffer (6–7.5) 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.
Tank Setup
To house Neolamprologus Tretocephalus and Red Tailed Redeye Puffer together, plan for an aquarium of at least 150 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), Plants - Densely 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.
Why This Pairing Usually Fails in Practice
Neolamprologus Tretocephalus and Red Tailed Redeye Puffer 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 Neolamprologus Tretocephalus and Red Tailed Redeye Puffer.
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
Show 9 more tank sizes
Frequently Asked Questions
Can Neolamprologus Tretocephalus and Red Tailed Redeye Puffer live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Neolamprologus Tretocephalus and Red Tailed Redeye Puffer need?
A minimum of 150 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 Neolamprologus Tretocephalus and Red Tailed Redeye Puffer 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 Neolamprologus Tretocephalus or Red Tailed Redeye Puffer aggressive?
Neolamprologus Tretocephalus is semi-aggressive (8/10) and Red Tailed Redeye Puffer is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Neolamprologus Tretocephalus and Red Tailed Redeye Puffer need?
Their pH requirements do not overlap. Neolamprologus Tretocephalus prefers 8–9, while Red Tailed Redeye Puffer needs 6–7.5. This makes them incompatible in the same water chemistry.
Will Red Tailed Redeye Puffer nip Neolamprologus Tretocephalus's fins?
Red Tailed Redeye Puffer is a known fin nipper. If Neolamprologus Tretocephalus has long or flowing fins, there is a real risk of fin damage. Keeping Red Tailed Redeye Puffer in a larger group can help redirect nipping behaviour toward conspecifics.
How do I manage Neolamprologus Tretocephalus's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Neolamprologus Tretocephalus 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.
Shared setup supplies
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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?
- Contact the editorial team
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