Can Neolamprologus Pulcher and Rosy Finned Tetra Live Together?
Neolamprologus Pulcher and Rosy Finned 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
Can your tank handle Neolamprologus Pulcher and Rosy Finned Tetra?
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 Pulcher is a semi-aggressive species (7/10), while Rosy Finned Tetra is peaceful (1/10). This notable difference means Neolamprologus Pulcher may occasionally assert dominance over Rosy Finned Tetra.
Large aggression gap (6 points) between Neolamprologus Pulcher and Rosy Finned Tetra increases stress risk for the more peaceful fish.
Neolamprologus Pulcher and Rosy Finned 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.
Additional behavioural considerations to keep in mind: Shrimp eaters may also prey on very small nano fish.
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 Neolamprologus Pulcher (8–9) and Rosy Finned Tetra (5.5–7.5) do not overlap, making it impossible to satisfy both species simultaneously.
For general hardness, the shared comfort zone is 10–12 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Neolamprologus Pulcher and Rosy Finned Tetra together, plan for an aquarium of at least 75 litres with a minimum length of 60 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), 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 Pulcher and Rosy Finned Tetra 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 Pulcher and Rosy Finned Tetra.
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
36 Gallon Bowfront
40 Gallon Breeder
Show 17 more tank sizes
Diet & Feeding
Feeding time deserves special attention with this pairing. Neolamprologus Pulcher is a known shrimp eater and may prey on small invertebrates or nano fish like Rosy Finned Tetra.
Frequently Asked Questions
Can Neolamprologus Pulcher and Rosy Finned Tetra live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Neolamprologus Pulcher and Rosy Finned Tetra need?
A minimum of 75 litres (tank length at least 60 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 Pulcher and Rosy Finned 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 Neolamprologus Pulcher or Rosy Finned Tetra aggressive?
Neolamprologus Pulcher is semi-aggressive (7/10) and Rosy Finned 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 Neolamprologus Pulcher and Rosy Finned Tetra need?
Their pH requirements do not overlap. Neolamprologus Pulcher prefers 8–9, while Rosy Finned Tetra needs 5.5–7.5. This makes them incompatible in the same water chemistry.
How do I manage Neolamprologus Pulcher's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Neolamprologus Pulcher 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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