Can Blue Back Blue Eye and Checkerboard Cichlid Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 3, 2026
Not Recommended

Blue Back Blue Eye and Checkerboard Cichlid are not recommended as tank mates due to incompatible water types and conflicting pH requirements and incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Blue Back Blue Eye

Pseudomugil cyanodorsalis

Checkerboard Cichlid

Dicrossus filamentosus

🐠Family Group
Blue Back Blue Eye
Rainbowfish
Checkerboard Cichlid
Cichlids - South American
Temperament
Blue Back Blue Eye
Peaceful (2/10)
Checkerboard Cichlid
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Blue Back Blue Eye
22–30°C
Checkerboard Cichlid
24–30°C
pH Range
✗ No overlap
Blue Back Blue Eye
7–8.5
Checkerboard Cichlid
4.5–6.5
Hardness (dGH)
✗ No overlap
Blue Back Blue Eye
10–30
Checkerboard Cichlid
1–5
Water Type
✗ No overlap
Blue Back Blue Eye
Brackish Required
Checkerboard Cichlid
Freshwater Only
Flow Preference
✓ Compatible
Blue Back Blue Eye
Moderate
Checkerboard Cichlid
Low
Min Tank Volume
Combined: 60 L
Blue Back Blue Eye
38 L
Checkerboard Cichlid
60 L
Swimming Level
Shared: 1 zone
Blue Back Blue Eye
TopMiddle
Checkerboard Cichlid
BottomMiddle
🏷️Behavior Tags
Blue Back Blue Eye
Nano / Bite-sized (Predation Risk)Jumper (Lid Required)Hyperactive / Fast SwimmerFry Predator
Checkerboard Cichlid
Shy / Slow Moving (Easily Stressed)Fry Predator
Stocking calculator

Can your tank handle Blue Back Blue Eye and Checkerboard Cichlid?

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.

Blue Back Blue Eye
Checkerboard Cichlid
Test both in my tank

Behaviour & Temperament

Blue Back Blue Eye is a peaceful species (2/10), while Checkerboard Cichlid is generally mild-mannered (3/10). This modest difference means Checkerboard Cichlid may occasionally assert dominance over Blue Back Blue Eye.

Blue Back Blue Eye and Checkerboard Cichlid 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: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Blue Back 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 30°C. Aim for the midpoint of this range (around 27.0°C) for optimal comfort.

The pH requirements of Blue Back Blue Eye (7–8.5) and Checkerboard Cichlid (4.5–6.5) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Blue Back Blue Eye needs 10–30 dGH while Checkerboard Cichlid requires 1–5 dGH.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together.

Tank Setup

To house Blue Back Blue Eye and Checkerboard Cichlid together, plan for an aquarium of at least 60 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: Driftwood (Digestion/Hiding), Sand (Sifters), Leaf Litter/Blackwater, Plants - Densely covered. 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

Blue Back Blue Eye and Checkerboard Cichlid 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 Blue Back Blue Eye and Checkerboard Cichlid.

Show 19 more tank sizes

Frequently Asked Questions

Can Blue Back Blue Eye and Checkerboard Cichlid live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Blue Back Blue Eye and Checkerboard Cichlid need?

A minimum of 60 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 Blue Back Blue Eye and Checkerboard Cichlid together?

Keep the aquarium between 24°C and 30°C. A target of around 27.0°C sits comfortably within both species' preferred ranges.

Are Blue Back Blue Eye or Checkerboard Cichlid aggressive?

Blue Back Blue Eye is peaceful (2/10) and Checkerboard Cichlid is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Blue Back Blue Eye and Checkerboard Cichlid need?

Their pH requirements do not overlap. Blue Back Blue Eye prefers 7–8.5, while Checkerboard Cichlid needs 4.5–6.5. 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 3, 2026
Last updated
May 3, 2026
Issues or corrections?
Contact the editorial team

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