Can Gertrude's Spotted Blue-eye and Telmatochromis brichardi Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Not Recommended

Gertrude's Spotted Blue-eye and Telmatochromis brichardi 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

Telmatochromis brichardi

Telmatochromis brichardi

🐠Family Group
Gertrude's Spotted Blue-eye
Rainbowfish
Telmatochromis brichardi
Cichlids - African
Temperament
Gertrude's Spotted Blue-eye
Peaceful (2/10)
Telmatochromis brichardi
Semi-Aggressive (6/10)
Temperature
✓ Compatible
Gertrude's Spotted Blue-eye
21–28°C
Telmatochromis brichardi
24–28°C
pH Range
✗ No overlap
Gertrude's Spotted Blue-eye
6–7.5
Telmatochromis brichardi
8–9.3
Hardness (dGH)
✓ Compatible
Gertrude's Spotted Blue-eye
5–15
Telmatochromis brichardi
10–25
Water Type
✓ Compatible
Gertrude's Spotted Blue-eye
Freshwater Only
Telmatochromis brichardi
Freshwater Only
Flow Preference
✓ Compatible
Gertrude's Spotted Blue-eye
Moderate
Telmatochromis brichardi
Moderate
Min Tank Volume
Combined: 75 L
Gertrude's Spotted Blue-eye
38 L
Telmatochromis brichardi
75 L
Swimming Level
✓ Different zones
Gertrude's Spotted Blue-eye
TopMiddle
Telmatochromis brichardi
Bottom
🏷️Behavior Tags
Gertrude's Spotted Blue-eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Telmatochromis brichardi
Nano / Bite-sized (Predation Risk)Fry Predator
Stocking calculator

Can your tank handle Gertrude's Spotted Blue-eye and Telmatochromis brichardi?

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
Telmatochromis brichardi
Test both in my tank

Behaviour & Temperament

Gertrude's Spotted Blue-eye is a peaceful species (2/10), while Telmatochromis brichardi is moderately assertive (6/10). This notable difference means Telmatochromis brichardi may occasionally assert dominance over Gertrude's Spotted Blue-eye.

In terms of spatial distribution, Gertrude's Spotted Blue-eye prefers the Top (Surface) and Middle (Open Water) zones, whereas Telmatochromis brichardi occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

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 Telmatochromis brichardi (8–9.3) 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 Telmatochromis brichardi 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, Leaf Litter/Blackwater, Sand (Sifters), Shells (Breeding/Hiding), Established Algae (Otocinclus). 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 Telmatochromis brichardi 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 Telmatochromis brichardi.

Show 17 more tank sizes

Frequently Asked Questions

Can Gertrude's Spotted Blue-eye and Telmatochromis brichardi 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 Telmatochromis brichardi 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 Gertrude's Spotted Blue-eye and Telmatochromis brichardi 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 Telmatochromis brichardi aggressive?

Gertrude's Spotted Blue-eye is peaceful (2/10) and Telmatochromis brichardi is moderately assertive (6/10). 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 Telmatochromis brichardi need?

Their pH requirements do not overlap. Gertrude's Spotted Blue-eye prefers 6–7.5, while Telmatochromis brichardi needs 8–9.3. This makes them incompatible in the same water chemistry.

Editorial Review

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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