Can Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 6, 2026
Not Recommended

Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) 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

Gertrude's Spotted Blue-eye

Pseudomugil gertrudae

Lemon Cichlid (Leleupi)

Neolamprologus leleupi

🐠Family Group
Gertrude's Spotted Blue-eye
Rainbowfish
Lemon Cichlid (Leleupi)
Cichlids - African
Temperament
Gertrude's Spotted Blue-eye
Peaceful (2/10)
Lemon Cichlid (Leleupi)
Aggressive (7/10)
Temperature
✓ Compatible
Gertrude's Spotted Blue-eye
21–28°C
Lemon Cichlid (Leleupi)
24–28°C
pH Range
✗ No overlap
Gertrude's Spotted Blue-eye
6–7.5
Lemon Cichlid (Leleupi)
8–9
Hardness (dGH)
✓ Compatible
Gertrude's Spotted Blue-eye
5–15
Lemon Cichlid (Leleupi)
10–25
Water Type
✓ Compatible
Gertrude's Spotted Blue-eye
Freshwater Only
Lemon Cichlid (Leleupi)
Freshwater Only
Flow Preference
✓ Compatible
Gertrude's Spotted Blue-eye
Moderate
Lemon Cichlid (Leleupi)
Moderate
Min Tank Volume
Combined: 110 L
Gertrude's Spotted Blue-eye
38 L
Lemon Cichlid (Leleupi)
110 L
Swimming Level
Shared: 1 zone
Gertrude's Spotted Blue-eye
TopMiddle
Lemon Cichlid (Leleupi)
MiddleBottom
🏷️Behavior Tags
Gertrude's Spotted Blue-eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Lemon Cichlid (Leleupi)
Territorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)Shrimp EaterFry Predator
Stocking calculator

Can your tank handle Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi)?

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.

Gertrude's Spotted Blue-eye
Lemon Cichlid (Leleupi)
Test both in my tank

Behaviour & Temperament

Gertrude's Spotted Blue-eye is a peaceful species (2/10), while Lemon Cichlid (Leleupi) is semi-aggressive (7/10). This notable difference means Lemon Cichlid (Leleupi) may occasionally assert dominance over Gertrude's Spotted Blue-eye.

Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) 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: Gertrude's Spotted Blue-eye 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 Gertrude's Spotted Blue-eye (6–7.5) and Lemon Cichlid (Leleupi) (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 Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) together, plan for an aquarium of at least 110 litres with a minimum length of 80 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, Leaf Litter/Blackwater, 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

Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) 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 Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi).

Show 12 more tank sizes

Diet & Feeding

Feeding time deserves special attention with this pairing. Lemon Cichlid (Leleupi) is a known shrimp eater and may prey on small invertebrates or nano fish like Gertrude's Spotted Blue-eye.

Frequently Asked Questions

Can Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) need?

A minimum of 110 litres (tank length at least 80 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 Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) 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 Gertrude's Spotted Blue-eye or Lemon Cichlid (Leleupi) aggressive?

Gertrude's Spotted Blue-eye is peaceful (2/10) and Lemon Cichlid (Leleupi) 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 Gertrude's Spotted Blue-eye and Lemon Cichlid (Leleupi) need?

Their pH requirements do not overlap. Gertrude's Spotted Blue-eye prefers 6–7.5, while Lemon Cichlid (Leleupi) needs 8–9. This makes them incompatible in the same water chemistry.

How do I manage Lemon Cichlid (Leleupi)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Lemon Cichlid (Leleupi) 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.

Editorial Review

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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