Can Guinean Bichir and Neon Blue Cichlid Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 6, 2026
Not Recommended

Guinean Bichir and Neon Blue Cichlid 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

Guinean Bichir

Polypterus ansorgii

Neon Blue Cichlid

Paracyprichromis nigripinnis

🐠Family Group
Guinean Bichir
Oddballs
Neon Blue Cichlid
Cichlids - African
Temperament
Guinean Bichir
Semi-Aggressive (5/10)
Neon Blue Cichlid
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Guinean Bichir
24–28°C
Neon Blue Cichlid
24–27°C
pH Range
✗ No overlap
Guinean Bichir
6.5–7.5
Neon Blue Cichlid
8–9
Hardness (dGH)
✓ Compatible
Guinean Bichir
5–15
Neon Blue Cichlid
10–20
Water Type
✓ Compatible
Guinean Bichir
Freshwater Only
Neon Blue Cichlid
Freshwater Only
Flow Preference
✓ Compatible
Guinean Bichir
Low
Neon Blue Cichlid
Moderate
Min Tank Volume
Combined: 680 L
Guinean Bichir
680 L
Neon Blue Cichlid
150 L
Swimming Level
Shared: 1 zone
Guinean Bichir
Bottom
Neon Blue Cichlid
MiddleBottom
🏷️Behavior Tags
Guinean Bichir
Piscivore (Eats small/nano fish)Jumper (Lid Required)Nocturnal
Neon Blue Cichlid
Hyperactive / Fast Swimmer
Stocking calculator

Can your tank handle Guinean Bichir and Neon Blue 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.

Guinean Bichir
Neon Blue Cichlid
Test both in my tank

Behaviour & Temperament

Guinean Bichir is a moderately assertive species (5/10), while Neon Blue Cichlid is generally mild-mannered (3/10). This modest difference means Guinean Bichir may occasionally assert dominance over Neon Blue Cichlid.

Guinean Bichir and Neon Blue Cichlid both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Worth noting: Guinean Bichir is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Guinean Bichir 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 27°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.

The pH requirements of Guinean Bichir (6.5–7.5) and Neon Blue Cichlid (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 Guinean Bichir and Neon Blue Cichlid together, plan for an aquarium of at least 680 litres with a minimum length of 180 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), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), Plants - Floating. Meeting these requirements will help both species thrive.

Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.

Why This Pairing Usually Fails in Practice

Guinean Bichir and Neon Blue 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 Guinean Bichir and Neon Blue Cichlid.

Frequently Asked Questions

Can Guinean Bichir and Neon Blue Cichlid live together?

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

What size tank do Guinean Bichir and Neon Blue Cichlid need?

A minimum of 680 litres (tank length at least 180 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 Guinean Bichir and Neon Blue Cichlid 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 Guinean Bichir or Neon Blue Cichlid aggressive?

Guinean Bichir is moderately assertive (5/10) and Neon Blue Cichlid is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Guinean Bichir and Neon Blue Cichlid need?

Their pH requirements do not overlap. Guinean Bichir prefers 6.5–7.5, while Neon Blue Cichlid needs 8–9. This makes them incompatible in the same water chemistry.

Does Guinean Bichir being nocturnal affect compatibility?

Guinean Bichir is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Guinean Bichir during evening hours.

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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