Can Delicate Blue-Eye and Neolamprologus Pulcher Live Together?
Delicate Blue-Eye and Neolamprologus Pulcher 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 Delicate Blue-Eye and Neolamprologus Pulcher?
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
Delicate Blue-Eye is a peaceful species (1/10), while Neolamprologus Pulcher is semi-aggressive (7/10). This notable difference means Neolamprologus Pulcher may occasionally assert dominance over Delicate Blue-Eye.
Large aggression gap (6 points) between Delicate Blue-Eye and Neolamprologus Pulcher increases stress risk for the more peaceful fish.
Delicate Blue-Eye and Neolamprologus Pulcher 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.
Worth noting: Delicate Blue-Eye is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 25°C and 27°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.
The pH requirements of Delicate Blue-Eye (5–7.5) and Neolamprologus Pulcher (8–9) 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 Delicate Blue-Eye and Neolamprologus Pulcher 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: Plants - Densely covered, Plants - Floating, 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
Delicate Blue-Eye and Neolamprologus Pulcher 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 Delicate Blue-Eye and Neolamprologus Pulcher.
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 Delicate Blue-Eye.
Frequently Asked Questions
Can Delicate Blue-Eye and Neolamprologus Pulcher live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Delicate Blue-Eye and Neolamprologus Pulcher 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 Delicate Blue-Eye and Neolamprologus Pulcher together?
Keep the aquarium between 25°C and 27°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.
Are Delicate Blue-Eye or Neolamprologus Pulcher aggressive?
Delicate Blue-Eye is peaceful (1/10) and Neolamprologus Pulcher is semi-aggressive (7/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Delicate Blue-Eye and Neolamprologus Pulcher need?
Their pH requirements do not overlap. Delicate Blue-Eye prefers 5–7.5, while Neolamprologus Pulcher needs 8–9. 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.
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 6, 2026
- Last updated
- May 6, 2026
- Issues or corrections?
- Contact the editorial team
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